Pregnancy, Childbirth & Puerperium

Postpartum psychosis: recognition and emergency management

Clinical Overview and When to Suspect Postpartum Psychosis

— Incidence ~1–2 per 1,000 deliveries; far rarer than postpartum blues (~50%) and postpartum depression (~10–15%)

— Considered a true psychiatric emergency — risk of infanticide ~4%, suicide ~5%

— Any new mother (especially within first 4 weeks) presenting with insomnia, agitation, confusion, paranoia, bizarre behavior, or "she's not herself" reported by family

— Reports of strange beliefs about the baby (e.g., baby is possessed, evil, switched, must be "saved")

— Command hallucinations to harm self or infant

— Rapid mood swings alternating euphoria/irritability/dysphoria — often resembles a manic episode

— Personal or family history of bipolar I disorder (recurrence risk up to 25–50% per delivery)

— Prior postpartum psychosis (recurrence ~50–80%)

— Primiparity, sleep deprivation, abrupt discontinuation of mood stabilizers during pregnancy

— Obstetric complications, autoimmune thyroiditis postpartum

— Most presentations occur after hospital discharge, often surfacing at the 1- or 2-week postpartum visit, pediatric well-baby check, lactation clinic, or ED

— Outpatient clinicians (FM, OB, peds, psych) must recognize on first contact

Board pearl: Postpartum psychosis is essentially a bipolar-spectrum illness triggered by the postpartum hormonal/sleep shift — treat it like an acute manic episode with psychotic features, not like schizophrenia. Always screen new mothers presenting with insomnia and agitation for psychosis, not just depression.

Definition: Acute-onset psychotic syndrome arising in the postpartum period, most commonly within the first 2 weeks after delivery (often days 3–10), characterized by delusions, hallucinations, disorganized thinking, mood lability, and rapid waxing/waning of cognition and orientation.

Epidemiology:

When to suspect (Step 3 ambulatory/ED trigger):

Highest-risk patients:

Why it matters now (Step 3 framing):

Presentation Patterns and Key History

— Onset typically days 3–10 postpartum; >95% within the first 4 weeks

— Prodrome of insomnia (can't sleep even when baby sleeps), restlessness, anxiety, and mood lability for 1–3 days, then explosive psychotic break

— Delusions: often baby-focused — infant is the devil, the antichrist, dying, switched at birth, must be baptized/rescued/protected by extreme means

— Hallucinations: auditory > visual; command hallucinations are a red flag

— Disorganization: tangential speech, bizarre behavior, neglect of hygiene/feeding

— Mood symptoms: mixed/manic features (grandiosity, pressured speech, decreased need for sleep) often alternating with profound depression within hours

— Cognitive features: waxing-waning confusion, disorientation, perplexity — this delirium-like quality is highly characteristic and distinguishes it from chronic primary psychotic disorders

— Personal/family psychiatric history — especially bipolar I, prior PPP, schizoaffective

— Medication adherence in pregnancy (was lithium/lamotrigine stopped?)

— Sleep over past 72 hours

— Substance use, including stimulants and over-the-counter sleep aids

— Obstetric course: PPH, preeclampsia, sepsis, retained products, blood transfusion

— Thyroid symptoms, autoimmune history

— Suicidal/homicidal ideation, specifically toward the infant — ask directly, document carefully

Step 3 management: When a postpartum patient calls or presents with new insomnia plus any odd thought content, do not manage by phone or arrange routine follow-up — bring her in the same day, screen face-to-face for psychosis and SI/HI, and arrange psychiatric evaluation. Telephone reassurance in this scenario is a tested wrong answer.

Classic timeline:

Core symptom clusters:

High-yield history to elicit:

Collateral is mandatory: patient may minimize or conceal symptoms; partner/family often the first to report.

Physical Exam Findings and Medical Assessment

— Appearance: disheveled, agitated or catatonic, poor eye contact

— Affect: labile, perplexed, fearful, or inappropriately euphoric

— Speech: pressured, tangential, or mute

— Thought: delusions (often persecutory or infant-related), thought disorganization

— Perception: AH/VH; ask about command hallucinations

— Cognition: fluctuating orientation and attention — perform a brief MoCA or orientation screen; impairment supports the "delirium-like" quality of PPP

— Insight/judgment: typically severely impaired

— Fever → consider sepsis, endometritis, mastitis, meningitis/encephalitis

— Tachycardia, hypertension → thyrotoxicosis, sympathomimetic intoxication, preeclampsia/eclampsia

— Hypoxia → pulmonary embolism (postpartum hypercoagulability), amniotic fluid sequelae

— Hypotension/pallor → hemorrhage, Sheehan syndrome

— Neuro: focal deficits, meningismus, seizure activity, asterixis → push toward CNS organic etiology

— Thyroid: goiter, tremor, lid lag (postpartum thyroiditis can mimic mania/psychosis)

— Abdomen/pelvis: uterine tenderness, foul lochia (endometritis)

— Breasts: mastitis, abscess

— Skin: rashes (lupus flare, drug reaction)

— Observe interaction if safe; do not leave alone with infant if psychosis is suspected

— Document infant safety plan

Key distinction: A new postpartum psychotic presentation is medical until proven otherwise. Unlike chronic schizophrenia, postpartum psychosis frequently has medical mimics (eclampsia, infection, autoimmune encephalitis, thyroid storm, Sheehan, drug effects). A normal physical exam plus normal vitals plus normal initial labs is required before settling on a primary psychiatric diagnosis.

General/mental status exam:

Vital signs and general medical exam — never skip:

Focused systems:

Safety assessment of mother–infant dyad:

Diagnostic Workup — Initial Labs, Imaging, and Bedside Studies

— CBC with differential (infection, anemia from PPH)

— CMP (electrolytes, glucose, BUN/Cr, LFTs — hepatic encephalopathy, HELLP residua)

— TSH and free T4 (postpartum thyroiditis can present with mania or psychosis at 1–6 months)

— Calcium, magnesium, phosphate

— Urinalysis and urine culture (UTI/pyelonephritis common postpartum)

— Urine toxicology (stimulants, PCP, cannabis with synthetic adulterants)

— Blood alcohol level

— Pregnancy test if uncertain timeline / consider retained products

— Beta-hCG quantitatively if molar pregnancy on differential

— Blood cultures x2, lactate, CXR

— Pelvic exam, endometrial cultures if endometritis suspected

— Lumbar puncture if meningismus, focal neuro deficits, or persistent fever without source

— BP monitoring, urine protein/creatinine ratio, LDH, haptoglobin, peripheral smear, LFTs, platelets — evaluate for late postpartum preeclampsia/eclampsia and HELLP, which can occur up to 6 weeks postpartum

— Baseline before starting antipsychotics (QTc)

— Screen for arrhythmia, ischemia in cardiomyopathy of pregnancy

— Non-contrast head CT for focal deficits, severe headache, trauma, or atypical features

— MRI brain if CT negative but suspicion remains (look for posterior reversible encephalopathy syndrome [PRES], cerebral venous sinus thrombosis, autoimmune/limbic encephalitis)

Board pearl: A postpartum woman with new psychosis, headache, and hypertension is eclampsia/PRES until proven otherwise — get neuroimaging and start magnesium and BP control, not just antipsychotics. Anchoring on "postpartum psychosis" without medical workup is a classic distractor.

Rule out medical mimics first — this is the central Step 3 task.

Initial labs (every patient):

If febrile or septic-appearing:

If hypertensive or with headache/visual changes:

ECG:

Imaging:

Diagnostic Workup — Advanced and Confirmatory Studies

— LP with CSF studies: cell count, protein, glucose, Gram stain/culture, HSV PCR, VDRL

— Autoimmune encephalitis panel: anti-NMDA receptor antibodies — classically presents in young women with psychiatric symptoms, orofacial dyskinesias, autonomic dysfunction, seizures; ovarian teratoma association makes it a postpartum/peripartum mimic worth chasing

— Anti-thyroid peroxidase (Hashimoto encephalopathy)

— ANA, dsDNA, complement (lupus cerebritis — postpartum flare common)

— Ceruloplasmin if movement disorder and young patient

— Nonconvulsive status epilepticus can mimic catatonia/psychosis

— Diffuse slowing supports a delirium/encephalopathic process

— Sensitive for PRES, sinus venous thrombosis (MRV), demyelination, limbic encephalitis

— Transvaginal US or pelvic MRI if anti-NMDA suspected (teratoma hunt)

— DSM-5-TR does not have a standalone "postpartum psychosis" code; coded as brief psychotic disorder with postpartum onset OR more commonly bipolar I disorder, manic episode with psychotic features, peripartum onset specifier (within 4 weeks of delivery)

— Many experts and ICD frame PPP as a bipolar-spectrum episode regardless of prior history

— Edinburgh Postnatal Depression Scale (EPDS) — score ≥13 prompts further eval; item 10 screens self-harm

— Mood Disorder Questionnaire if bipolarity suspected

Key distinction: Postpartum blues (transient, days 2–10, no functional impairment, no psychosis) ≠ postpartum depression (≥2 weeks, mood/anhedonia, intact reality testing) ≠ postpartum psychosis (acute, psychotic features, often confused/manic, emergency). Time course + reality testing separates them on exam stems.

When initial workup is unrevealing but presentation is atypical (prolonged fever, seizures, focal deficits, autonomic instability, movement disorder, persistent confusion):

EEG:

MRI brain with contrast:

Pelvic/ovarian imaging:

Psychiatric diagnostic frame:

Validated screens (adjuncts, not diagnostic):

Risk Stratification and First-Line Management Logic

— Place in safe, monitored area; 1:1 sitter

— Separate mother from infant until safety assessed; arrange supervised contact only

— Vitals q1h initially, continuous pulse oximetry if sedated

— IV access, labs as above, ECG

— Suicide and homicide precautions; remove belongings that could be used for self-harm

— Document capacity assessment and reasons for involuntary hold if patient refuses

— Infant safety: any delusion involving the baby, command hallucinations, or expressed thoughts of harm → infant immediately removed from unsupervised care; involve social work and child protective services per state law

— Self-harm: active SI, plan, or means → suicide precautions, possible 1:1

— Medical instability: abnormal vitals or exam → medical admission with psychiatric consultation rather than direct psych transfer

— Inpatient psychiatric admission is standard of care, ideally a mother–baby psychiatric unit if regionally available (improves bonding outcomes); in US these are uncommon, so most patients go to standard inpatient psych

— Voluntary admission preferred; if refused and patient lacks capacity or poses danger → involuntary commitment under state statute

— Treat as acute mania with psychotic features: mood stabilizer + antipsychotic ± benzodiazepine for agitation/sleep; ECT for severe, refractory, catatonic, or breastfeeding-priority cases

— Restore sleep aggressively — sleep deprivation perpetuates the episode

CCS pearl: On a CCS case, the correct first orders for suspected postpartum psychosis are: admit to psychiatric unit, suicide/homicide precautions, 1:1 observation, separate from infant, basic labs + TSH + tox + UA, ECG, psychiatry consult, social work consult. Sending home with outpatient follow-up is always wrong.

All suspected postpartum psychosis = psychiatric emergency requiring inpatient psychiatric admission, almost without exception.

Immediate priorities (ED/CCS order set):

Risk stratification axes:

Disposition logic:

Treatment frame:

Pharmacotherapy — First-Line Regimens

— Olanzapine 5–10 mg PO/IM, or risperidone 1–2 mg PO, or quetiapine 50–100 mg PO; titrate

— Haloperidol 2–5 mg IM/IV acceptable for severe agitation; check QTc

— Avoid IM olanzapine + parenteral benzodiazepine concurrently (respiratory depression risk)

— Lithium is first-line for acute mania and for relapse prevention; load to level 0.8–1.2 mEq/L; check renal function, thyroid, ECG, pregnancy/lactation plan

— Valproate alternative but avoid in women of reproductive age unless contraception assured (teratogenicity); generally acceptable postpartum if no future pregnancy planned

— Lamotrigine useful for maintenance, especially bipolar depression phase; slow titration limits acute utility

— Lorazepam 1–2 mg PO/IM q4–6h PRN for agitation, insomnia, catatonia

— Especially valuable if catatonic features (lorazepam challenge: 2 mg IV/IM)

— Daily mental status, vitals, ECG (QTc), metabolic panel

— Lithium level at 5–7 days and after dose changes; TSH, Cr at baseline and q6 months

— Weight, lipids, A1c for atypicals

— ECT is highly effective, rapid-onset, and considered first-line for severe PPP; safe in breastfeeding

Board pearl: Lithium + antipsychotic is the prototypical first-line regimen for postpartum psychosis on Step 3. ECT is the right answer when the question emphasizes severity, suicidality, catatonia, pregnancy considerations, or breastfeeding compatibility.

Goal: rapid control of psychosis, agitation, and mood instability; restoration of sleep; prevention of harm.

Antipsychotic (cornerstone for acute symptoms):

Mood stabilizer (essential because most PPP is bipolar-spectrum):

Benzodiazepine adjunct:

Sleep restoration: prioritize 6–8 hours nightly; quetiapine, olanzapine, or short-course benzodiazepine often used.

Monitoring:

Refractory or severe cases (suicidality, catatonia, refusal of food/meds, breastfeeding patient wanting to avoid polypharmacy):

Expanded Pharmacology — Breastfeeding, Sleep, and Maintenance Choices

— Lithium: historically avoided but now considered compatible with breastfeeding with monitoring of infant lithium level, TSH, Cr, and hydration; decision shared with patient

— Valproate, carbamazepine: generally considered safe in lactation (low transfer), but valproate has reproductive-age concerns

— Lamotrigine: low-moderate transfer; monitor infant for rash; acceptable

— Olanzapine, quetiapine: preferred atypicals in lactation (low relative infant dose)

— Risperidone, aripiprazole: acceptable; aripiprazole may suppress lactation via D2 effect on prolactin

— Avoid clozapine (agranulocytosis risk in infant) and long-acting injectables in breastfeeding mothers

— Short-course lorazepam or temazepam if non-breastfeeding

— Quetiapine 25–100 mg HS often dual-purpose (antipsychotic + sleep)

— Avoid zolpidem long-term; avoid diphenhydramine (anticholinergic, sedation, may worsen confusion)

— Continue mood stabilizer (lithium preferred) for at least 9–12 months after first episode, longer if recurrent or family history of bipolar

— Antipsychotic typically continued 6 months then tapered if stable

— Psychotherapy (CBT, interpersonal therapy), partner/family psychoeducation

— Women with prior PPP or bipolar I should be offered prophylactic lithium reinitiated immediately postpartum (or continued through pregnancy at lowest effective dose with fetal echo at 16–20 weeks given small Ebstein anomaly risk)

— Reduces recurrence from ~50% to <20%

— NSAIDs, ACEi, thiazides raise lithium levels → toxicity risk in postpartum patients receiving these for HTN/pain

Step 3 management: When asked about future-pregnancy planning in a woman with prior PPP, the answer is preconception psychiatric consultation and reinitiation of prophylactic lithium at delivery — not "avoid all psychotropics."

Breastfeeding considerations (frequently tested):

Sleep agents:

Maintenance therapy after acute stabilization:

Prophylaxis for future pregnancies:

Drug interactions to know:

Special Populations — Renal, Hepatic, and Older Postpartum Patients

— Lithium is renally cleared — contraindicated or requires substantial dose reduction in CKD stage ≥3 (eGFR <60); avoid if eGFR <30

— Postpartum AKI (from PPH, preeclampsia, sepsis) can precipitate lithium toxicity — hold lithium until renal function recovers

— Signs of toxicity: tremor, ataxia, confusion, vomiting, seizures; level >1.5 mEq/L symptomatic; dialysis if >4.0 or severe symptoms

— Alternatives: valproate, atypical antipsychotics, ECT

— Avoid valproate (hepatotoxicity, hyperammonemia)

— Carbamazepine has hepatic metabolism and induces CYP3A4 — drug interactions

— Quetiapine, olanzapine: dose-adjust in severe hepatic impairment

— Lithium preferred from a hepatic standpoint (no hepatic metabolism)

— Higher risk of obstetric complications confounding the picture (preeclampsia, gestational diabetes, cardiomyopathy)

— More sensitive to anticholinergic and orthostatic effects of antipsychotics

— Start at lower doses; check ECG for QTc

— NSAIDs (postpartum analgesia) + lithium → toxicity

— Methylergonovine, bromocriptine, cabergoline (used for PPH or lactation suppression) can cause psychiatric side effects including psychosis — review the postpartum med list

— Magnesium for preeclampsia can cause weakness/sedation confounding mental status

— Lithium can induce hypothyroidism; postpartum thyroiditis common — check TSH at baseline, 3 and 6 months

Board pearl: In a postpartum patient on lithium who becomes confused with tremor and GI upset, stop the lithium, check a level and renal function, and look for NSAID/ACEi/thiazide co-administration or volume depletion. Lithium toxicity is a tested cause of altered mental status that mimics worsening psychiatric illness.

Renal impairment:

Hepatic impairment:

Older postpartum patients (advanced maternal age, ≥35):

Patients on multiple meds (polypharmacy from obstetric course):

Thyroid considerations:

Special Populations — Adolescents, Cultural, and Resource-Limited Settings

— Higher baseline rates of depression and substance use; psychosis still rare but possible

— Consent for psychiatric treatment in minors varies by state — most allow minors to consent to mental health care; parental involvement encouraged

— Custody and infant welfare evaluation often more complex; involve social work early

— Safe medication choices similar to adults; consider growth/metabolic monitoring

— Recurrence risk 50–80% with each subsequent delivery

— Preconception psychiatric planning is essential; prophylactic lithium at delivery is standard

— Religious/spiritual content of delusions (e.g., baby is divine, demonic) may be misinterpreted as normative belief — use professional interpreters and cultural consultants

— Stigma around psychiatric admission may delay presentation; emphasize medical framing and infant safety

— Engage extended family for collateral and support; cultural norms around postpartum confinement (e.g., "doing the month") can be protective (sleep, social support) or isolating

— Higher risk of delayed recognition; pediatric and OB visits become critical screening points

— Identify guardian/temporary caregiver for infant during admission

— Standard inpatient psych admission; coordinate with lactation consultant for pumping if breastfeeding

— Telepsychiatry follow-up after discharge

— Biological mother carries the postpartum psychiatric risk regardless of family structure

— Non-gestational parents do not have postpartum psychosis but can have adjustment disorders and depression

Key distinction: Religious/cultural belief becomes a delusion only when it is outside the patient's cultural norm, fixed despite evidence, and disrupts function. A postpartum mother whose family confirms her statements about the baby being "evil" are out of character has a delusion, not a cultural belief.

Adolescent mothers:

Multiparous women with prior PPP:

Cultural and language considerations:

Patients without partner or social support:

Resource-limited settings (rural, no mother–baby unit):

LGBTQ+ and adoptive/surrogate parents:

Complications and Adverse Outcomes

— Infanticide: ~4% of untreated PPP cases — often in context of altruistic delusion ("saving" the baby)

— Suicide: ~5% — leading cause of maternal death in the first postpartum year; often violent means

— Combined filicide–suicide is a recognized pattern

— Lithium toxicity: especially with postpartum volume shifts, NSAID use, dehydration

— Neuroleptic malignant syndrome: fever, rigidity, autonomic instability, ↑CK — high-potency antipsychotics

— Serotonin syndrome if SSRI co-administered with certain antiemetics (ondansetron, metoclopramide)

— QT prolongation and torsades with haloperidol, ziprasidone, especially with electrolyte abnormalities

— Metabolic syndrome with atypicals — weight, lipids, glucose

— Sedation/falls with benzodiazepines, especially in fatigued mothers

— Late postpartum hemorrhage, endometritis, VTE — all can occur during admission

— Breast engorgement, mastitis, milk supply issues if breastfeeding interrupted abruptly

— Prolonged separation impairs attachment; mother–baby units improve outcomes

— Risk of postpartum depression and chronic mood disorder in subsequent years

— Many women receive a formal bipolar I diagnosis after PPP

— Lifetime risk of further mood episodes (postpartum or otherwise) is high

— Recurrence with future pregnancies very high without prophylaxis

— Partner depression/PTSD, sibling disruption — assess and refer

Board pearl: Maternal suicide is among the leading causes of death in the first postpartum year in high-income countries, and most cases are preceded by undiagnosed or undertreated bipolar/psychotic illness. This is the public-health frame Step 3 likes to test.

Catastrophic outcomes (drive the urgency of recognition):

Medication-related complications:

Obstetric complications still in play:

Mother–infant bonding disruption:

Long-term psychiatric trajectory:

Family impact:

When to Escalate Care — ICU, Consults, and Inpatient Triage

— Active suicidal or homicidal ideation, especially toward infant

— Command hallucinations

— Inability to provide self-care or care for the infant

— Catatonia, refusal of food/fluids, severe agitation requiring restraint

— Diagnostic uncertainty regarding organic etiology

— Voluntary if patient agrees

— Involuntary hold (state-specific statute, e.g., 72-hour emergency hold) if patient lacks capacity or is dangerous to self/others/infant

— Document capacity assessment, danger criteria, and least-restrictive alternatives considered

— Hemodynamic instability, sepsis, eclampsia, PRES, status epilepticus, NMS, serotonin syndrome, severe lithium toxicity requiring hemodialysis

— Manage medical issue first with psychiatric consultation; transfer to psych when stabilized

— Psychiatry: primary management, ECT evaluation

— Obstetrics: ongoing postpartum care, evaluation of late obstetric complications

— Social work: custody, CPS reporting per state law, discharge planning

— Lactation consultant: if breastfeeding, plan for pumping/storage during separation

— Pediatrics: infant assessment, especially if maternal med exposure or concern about prior care

— Neurology: if seizures, focal deficits, suspected autoimmune encephalitis

— Anesthesia: for ECT

— Educate on diagnosis, prognosis, treatment plan, safety planning, and high recurrence risk in future pregnancies

CCS pearl: On a CCS case, the sequence is: stabilize medically → psychiatry consult → social work consult → involuntary hold if needed → admit to psych → start mood stabilizer + antipsychotic → consider ECT if severe. Do not advance the clock past initial workup without these orders queued.

Always-escalate features:

Inpatient psychiatric admission (default disposition):

Medical/ICU admission when:

Consultations to order:

Family meeting:

Key Differentials — Other Psychiatric Causes

— 50–80% of mothers; days 2–10; mild mood lability, tearfulness, anxiety

— No psychosis, no functional impairment, resolves spontaneously within 2 weeks

— Reassurance, support, sleep; if persists >2 weeks → reassess for PPD

— Onset within 12 months postpartum (peaks 2–6 months); ≥2 weeks of depressed mood/anhedonia plus neurovegetative symptoms

— Reality testing intact; may have intrusive thoughts of harming baby (egodystonic, distressing — distinct from delusional infanticidal ideation)

— Treat with SSRI (sertraline first-line in breastfeeding) + psychotherapy

— Considerable overlap with PPP — many now consider PPP a presentation of bipolar I

— Mania ≥7 days (or any duration with hospitalization), DIGFAST features, often with psychosis

— DSM-5-TR code commonly applied when symptoms <1 month with full return to baseline

— Chronic course, prodrome predates pregnancy; postpartum may worsen

— Less prominent confusion/mood lability; more chronic functional decline

— Egodystonic, distressing, resisted thoughts (e.g., fear of harming baby with knife)

— Reality testing intact, mother avoids triggers, seeks help

— Treat with SSRI + CBT/ERP; not an indication for separation or antipsychotic

— Trauma-focused therapy

Key distinction: Postpartum OCD intrusive thoughts ("what if I drowned my baby?" — horrifying to the mother) vs PPP delusions ("my baby is the devil and must be drowned" — believed and acted upon). The first is treated outpatient with SSRI/CBT; the second is an inpatient emergency.

Postpartum blues:

Postpartum depression:

Bipolar I, manic episode with peripartum onset:

Brief psychotic disorder with postpartum onset:

Schizophrenia/schizoaffective:

OCD with intrusive harm thoughts:

Adjustment disorder, PTSD from traumatic birth:

Key Differentials — Medical and Neurologic Mimics

— Hypertension, headache, visual changes, seizures, altered mentation, often confusion/psychosis

— Up to 6 weeks postpartum; MRI shows posterior white matter edema

— Treat with magnesium, BP control, delivery if antepartum

— Postpartum hypercoagulable state; headache, seizures, focal deficits, encephalopathy

— MRV diagnostic; treat with anticoagulation

— Endometritis, mastitis with sepsis, pyelonephritis, meningitis/encephalitis (HSV)

— Fever, leukocytosis, focal findings; LP if CNS suspected

— Postpartum hemorrhage → pituitary infarction → panhypopituitarism

— Failure to lactate, fatigue, hypotension, hyponatremia, hypoglycemia, altered mentation

— Replace cortisol first, then thyroid

— Tremor, tachycardia, heat intolerance, agitation, psychosis

— TSH suppressed, free T4 elevated; beta-blockade, methimazole if Graves

— Young woman, psychiatric prodrome, then movement disorder, autonomic instability, seizures

— CSF antibodies; treat with immunotherapy and tumor removal

— Bromocriptine, cabergoline (lactation suppression), corticosteroids, sympathomimetics, illicit stimulants, methylergonovine

— Withdrawal: alcohol, benzodiazepines, opioids

Board pearl: Any postpartum woman with fever + altered mental status gets sepsis workup including endometritis evaluation and LP if indicated before the diagnosis is settled as psychiatric. Missing endometritis or HSV encephalitis is the classic "trap" wrong answer.

Eclampsia and PRES:

Cerebral venous sinus thrombosis:

Infection:

Sheehan syndrome:

Thyroid storm or postpartum thyroiditis (thyrotoxic phase):

Autoimmune encephalitis (anti-NMDA receptor):

Drug-induced:

Metabolic: hypoglycemia, hyponatremia (oxytocin, SIADH), hypocalcemia, hepatic encephalopathy, B12 deficiency

Wilson disease, porphyria: rare but tested

Secondary Prevention, Discharge Medications, and Long-Term Plan

— Resolution of acute psychosis and agitation

— Safe sleep and adequate intake

— Insight into illness and treatment, agreement with plan

— Supportive caregiver present; safe home environment

— Established outpatient psychiatry follow-up within 7 days

— Clear safety plan and infant care arrangement

— Mood stabilizer: lithium preferred (target 0.6–0.8 mEq/L maintenance); valproate or lamotrigine if lithium contraindicated

— Atypical antipsychotic continued at lowest effective dose, typically 6 months then taper

— Avoid prn benzodiazepines long-term

— Reconcile obstetric meds (NSAIDs, antihypertensives) for interactions

— Mood stabilizer for at least 9–12 months after first episode; lifelong if bipolar diagnosis or recurrent

— Antipsychotic 6 months then reassess

— Recurrence risk 50–80%

— Preconception psychiatric consultation

— Discuss prophylactic mood stabilizer during pregnancy or immediately postpartum

— Contraception: progestin-only methods or IUD preferred while on teratogenic mood stabilizers; avoid valproate if any chance of pregnancy

— Sleep protection (partner does night feeds, formula supplementation if needed)

— Avoid alcohol and stimulants

— Regular exercise, social support, peer support groups (Postpartum Support International)

— Thyroid function (postpartum thyroiditis, lithium effect)

— Metabolic monitoring on atypicals

Step 3 management: Before discharging a patient after PPP, schedule psychiatry follow-up within 7 days, ensure a safety plan signed by patient and family, and document future-pregnancy counseling with prophylactic lithium plan. Skipping any of these is a tested oversight.

Discharge readiness criteria:

Discharge medications:

Duration of treatment:

Future pregnancy counseling (must be addressed before discharge):

Lifestyle and protective factors:

Screen and treat comorbidities:

Follow-Up, Monitoring, and Rehabilitation

— Psychiatry within 7 days of discharge, then weekly x4 weeks, then monthly through first year

— Primary care/OB at standard 6-week postpartum visit plus interval visits for medication monitoring

— Pediatrics: ensure infant well-child visits attended; assess bonding and infant exposure to medications

— Trough level (12 hours post-dose) at 5–7 days after initiation/dose change, then every 3 months once stable

— TSH and creatinine at baseline, 3 months, 6 months, then every 6–12 months

— Calcium annually (hyperparathyroidism risk)

— ECG at baseline if cardiac risk

— Weight at every visit

— Fasting glucose/A1c and lipid panel at baseline, 3 months, then annually

— BP, waist circumference

— AIMS exam every 6 months for tardive dyskinesia

— Individual psychotherapy (CBT, interpersonal therapy)

— Couples/family therapy for partner support and education

— Mother–infant bonding interventions (video-feedback, parent–infant psychotherapy)

— Peer support groups (Postpartum Support International, Action on Postpartum Psychosis)

— Vocational counseling for return to work

— Insomnia, racing thoughts, irritability, increasing religious/persecutory preoccupation

— Have a written action plan: call psychiatrist same day, increase mood stabilizer per protocol, ensure sleep

— EPDS at 6 weeks, 3, 6, and 12 months postpartum

— Annual mental health screening thereafter

Board pearl: Insomnia in a woman with a history of postpartum psychosis is a red flag for relapse — same-day psychiatric contact and sleep restoration are the right answers, not "reassurance and sleep hygiene handout."

Follow-up cadence:

Lithium monitoring:

Atypical antipsychotic monitoring:

Psychosocial rehabilitation:

Relapse warning signs to teach patient and family:

Screening over time:

Ethical, Legal, and Patient Safety Considerations

— Acutely psychotic patients often lack capacity for treatment decisions

— Assess capacity formally: understanding, appreciation, reasoning, expressing a choice

— If lacks capacity → surrogate decision-maker (partner, parent) or court-appointed guardian; emergency treatment under implied consent for imminent danger

— Document capacity reassessment as illness improves

— Criteria (state-specific): danger to self, danger to others (including infant), or grave disability

— Use least-restrictive alternative; reassess regularly

— Patients retain right to legal counsel and judicial review

— Most US states require reporting suspected child endangerment to Child Protective Services

— Active delusions or homicidal ideation involving the infant typically meet threshold

— Reporting is not the same as removal — CPS assesses safety plan

— Document reasoning and reporting clearly

— Tarasoff-type duty: warn/protect identifiable targets (including infant)

— HIPAA permits disclosure to prevent imminent harm

— Highest-risk window is the first 7–14 days after discharge — schedule follow-up, medication reconciliation, safety plan, and emergency contact

— Ensure partner/family understands relapse signs and has crisis line and emergency department instructions

— Avoid early discharge without confirmed outpatient psychiatry appointment

— Shared decision-making weighing maternal mental health, medication transfer, sleep needs

— Acceptable to formula-feed to protect maternal sleep during recovery; this is not failure

— Obtain when patient regains capacity, or via surrogate/court order if needed urgently for severe illness

Key distinction: A patient with postpartum psychosis who refuses admission and expresses delusional beliefs about her infant does not have decision-making capacity for that refusal — emergency hold and CPS notification are appropriate; "respecting autonomy" is the wrong answer.

Capacity and consent:

Involuntary commitment:

Mandatory reporting and child protection:

Confidentiality limits:

Transition-of-care safety (Step 3 favorite):

Breastfeeding decisions:

Informed consent for ECT:

High-Yield Associations and Rapid-Fire Clinical Facts

Board pearl: If the stem mentions a postpartum woman with prior PPP planning another pregnancy, the answer almost always involves preconception psychiatric consultation and prophylactic lithium reinitiated immediately at delivery — sometimes continued through pregnancy.

Incidence: 1–2 per 1,000 deliveries

Onset: >95% within first 4 weeks postpartum, peak days 3–10

Strongest risk factor: personal or family history of bipolar I disorder

Recurrence with subsequent pregnancy: 50–80% without prophylaxis; reduced to <20% with lithium prophylaxis

Infanticide risk untreated: ~4%; suicide risk: ~5%

Treat as acute bipolar mania with psychotic features

First-line meds: lithium + atypical antipsychotic ± lorazepam

ECT is highly effective and first-line for severe, catatonic, suicidal, or breastfeeding-priority cases

Preferred breastfeeding-compatible meds: olanzapine, quetiapine, sertraline (for depression component), lamotrigine; lithium acceptable with monitoring

Sertraline is first-line SSRI in breastfeeding postpartum depression (lowest infant exposure)

Postpartum thyroiditis can mimic mania — always check TSH

Anti-NMDA receptor encephalitis mimics psychiatric illness; check for orofacial dyskinesias, autonomic instability, seizures

PRES/eclampsia possible up to 6 weeks postpartum

Cerebral venous sinus thrombosis: postpartum hypercoagulable

Sheehan syndrome: failure to lactate + postpartum hemorrhage history

DSM-5-TR uses "with peripartum onset" specifier (within 4 weeks)

Edinburgh Postnatal Depression Scale: score ≥13 abnormal; item 10 screens self-harm

Mother–baby psychiatric units improve bonding outcomes

Maternal suicide is among leading causes of death in first postpartum year

Lithium teratogenicity: small ↑ risk of Ebstein anomaly — fetal echo at 16–20 weeks; benefits often outweigh risks

Valproate: avoid in reproductive-age women without reliable contraception (neural tube defects, neurodevelopmental impairment)

Board Question Stem Patterns

— Day 5–10 postpartum, primiparous woman, family-history bipolar; family brings her in for not sleeping, agitation, belief that baby is possessed → Answer: psychiatric emergency admission, mood stabilizer + antipsychotic, separate from infant

— Postpartum woman with headache, hypertension, and "psychotic" behavior → Answer: workup for eclampsia/PRES; magnesium and BP control, neuroimaging — not antipsychotic monotherapy

— Mother reports horrifying thoughts of harming baby, distressed, avoids being alone with infant, reality intact → Answer: postpartum OCD; SSRI and CBT, not admission

— 6 weeks postpartum, depressed mood, anhedonia, intact reality → Answer: sertraline + psychotherapy, close follow-up

— Woman with prior PPP planning second child → Answer: preconception psych consult, prophylactic lithium plan

— Need SSRI in lactation → sertraline; antipsychotic → olanzapine or quetiapine; mood stabilizer → lithium (with monitoring) or lamotrigine

— Severe PPP with catatonia, refusal of food, suicidality, or breastfeeding mother who wants minimal med exposure → ECT

— Psychotic mother refuses admission, has delusions about infant → involuntary hold, CPS notification, emergency treatment

— Postpartum patient on lithium and ibuprofen now confused with tremor → stop lithium, hydrate, check level and renal function

— Patient appears calm in ED but family describes bizarre behavior at home → admit; trust collateral, don't discharge

Step 3 management: When question stem emphasizes transitions of care (just discharged from L&D, just seen at pediatric visit), the right answer almost always involves same-day in-person evaluation and psychiatric admission, never telephone reassurance.

Pattern 1 — The classic emergency:

Pattern 2 — The mimic trap:

Pattern 3 — Intrusive thoughts (postpartum OCD vs PPP):

Pattern 4 — Postpartum depression with passive SI:

Pattern 5 — Future pregnancy planning:

Pattern 6 — Breastfeeding medication choice:

Pattern 7 — ECT indication:

Pattern 8 — Capacity/legal:

Pattern 9 — Lithium toxicity:

Pattern 10 — The deceptively well patient:

One-Line Recap

Postpartum psychosis is an acute psychiatric emergency — usually a bipolar-spectrum episode triggered within the first 2 weeks postpartum — that requires same-day inpatient psychiatric admission, separation from the infant, medical workup to exclude eclampsia/PRES/infection/thyroid/autoimmune mimics, and treatment with lithium plus an atypical antipsychotic (or ECT for severe, catatonic, suicidal, or breastfeeding-priority cases), followed by long-term mood-stabilizer maintenance and prophylactic lithium for any future pregnancy.

Board pearl: On Step 3, the two highest-yield discriminators are (1) postpartum OCD intrusive thoughts (egodystonic, reality intact, treat outpatient with SSRI/CBT) vs PPP delusions (egosyntonic, acted upon, admit), and (2) never anchor on "psychiatric" before excluding eclampsia, infection, and thyroid storm in a postpartum patient with altered mental status.

Recognize: Days 3–10 postpartum, insomnia + bizarre/delusional thinking + waxing-waning confusion + bipolar family history = postpartum psychosis until proven otherwise.

Rule out organic causes first: Eclampsia/PRES, sepsis/endometritis, HSV encephalitis, thyrotoxicosis, Sheehan syndrome, anti-NMDA receptor encephalitis, lithium toxicity, and substance use — full medical workup with TSH, tox, CMP, UA, neuroimaging if indicated, before settling on a primary psychiatric diagnosis.

Treat as an emergency: Inpatient psychiatric admission (involuntary if needed), 1:1 observation, separate mother and infant until safety assessed, CPS notification when delusions involve the baby, lithium + atypical antipsychotic ± lorazepam, ECT for severe or refractory cases, and aggressive sleep restoration.

Plan for the long arc: Mood stabilizer for 9–12+ months after first episode, psychiatric follow-up within 7 days of discharge, EPDS screening across the first postpartum year, family psychoeducation about relapse warning signs (insomnia is the canary), and — critically for Step 3 — preconception counseling with prophylactic lithium reinitiated immediately postpartum for any future pregnancy to drop recurrence from 50–80% to under 20%.