Perinatal and postpartum psychiatric emergencies

• Postpartum psychosis is a rare but true psychiatric emergency: it affects about 1 to 2 women in every 1,000 births, and untreated illness carries a risk of suicide for the mother and infanticide for the baby. ^{[2] [3]}
• It usually begins suddenly in the first few days after childbirth, most often 3 to 10 days, sometimes up to four weeks, and declares itself with confusion, severe insomnia, mood change and abnormal or bizarre thoughts or behaviour. ^{[2] [3]}
• The single strongest risk factor is bipolar disorder, personal or family, yet two thirds of women who present have no prior psychiatric history, so postpartum psychosis can be the first psychiatric illness a woman ever has. ^{[2] [3]}
• Suspected postpartum psychosis demands same-day specialist assessment (within four hours of referral under NICE CG192), urgent medical work-up to exclude delirium and other causes, and hospital admission; never leave the woman alone and keep the baby safe. ^{[1] [2] [3]}
• Treatment is pharmacological and urgent: benzodiazepines for sleep and agitation, an antipsychotic, and lithium (target serum level 0.8 to 1.2 mmol/L acutely, continued for about 6 to 9 months), with electroconvulsive therapy for severe or resistant cases. ^{[1] [2] [3]}
• Whenever a woman needs inpatient psychiatric care in the first 12 months after childbirth she should normally be admitted with her baby to a specialist mother and baby unit; where none exists, a safe local plan must be made in advance. ^[1]

By the end of this page you should be able to:

1. Recognise postpartum psychosis by its typical onset, features and risk factors, and distinguish it from the baby blues, postpartum depression, anxiety and obsessive-compulsive disorder, and from medical mimics.
2. Carry out and document an infanticide and suicide risk assessment, and act correctly on the result.
3. Arrange the immediate work-up, referral and safe admission of a suspected case, including to a mother and baby unit.
4. Plan acute pharmacological treatment and continuation/prophylaxis, including lithium monitoring.
5. Counsel a mother about breastfeeding while taking lithium or an antipsychotic, using relative infant doses and infant monitoring.
6. Apply the guidance in low-resource settings and follow the relevant RCOG and NICE service standards.

This page deals with the emergencies: postpartum psychosis and other severe perinatal mental illness that must be recognised and acted on in hours, not weeks. It sits alongside the broader MedGrasp topic on perinatal mental health, which covers the baby blues, perinatal depression and anxiety in full.

Postpartum psychosis is not a separate diagnosis in DSM-5; it is a specifier ("with peripartum onset"), and the diagnostic manuals require onset within four weeks of delivery. ^[3] Clinically, however, most episodes start 3 to 10 days after birth, and many clinicians regard any acute onset in the first postpartum months, especially in a woman with bipolar disorder, as the same condition until proved otherwise. ^{[2] [3]} Postpartum psychosis is classified as a severe mental illness, alongside bipolar disorder and schizophrenia, which is what triggers the NICE care-pathway and service recommendations. ^[1]

Postpartum psychosis affects about 1 to 2 in every 1,000 births. ^{[2] [3]} It is one of the leading causes of maternal death through suicide, and suicidal ideation is far commoner in the perinatal period than completed suicide: perinatal suicide is estimated at 1.6 to 4.5 per 100,000 live births in the United States. ^[3]

• Onset. Typically sudden, 3 to 10 days after birth; onset can occur up to four weeks postpartum and occasionally later. ^{[2] [3]}
• Parity. Primiparity carries higher risk. Advanced maternal age and a mood episode during the index pregnancy are also risk factors. ^[3]
• Psychiatric history. Only about one third of women presenting with postpartum psychosis have any prior psychiatric history, and only about one third of those have previously been diagnosed with bipolar disorder; many present with their first psychiatric episode in the postpartum. ^[2]
• Bipolar disorder. About 20 to 30% of parous women with known bipolar disorder develop postpartum psychosis. Women with a first-degree relative who had postpartum psychosis have about a 70% risk of onset. ^{[2] [3]}
• Course. Approximately 50 to 80% of women who develop postpartum psychosis later have manic or hypomanic episodes consistent with a bipolar spectrum illness. Recurrence of postpartum psychosis in a subsequent pregnancy is greater than 54% in some series. ^{[2] [3]}
• Obstetric predictors. Most studies find no consistent pregnancy or obstetric risk factors; pre-eclampsia is an intriguing, not yet settled, possible association. ^[2]
• Immune findings. Autoimmune thyroiditis has been reported in 19% of women with postpartum psychosis versus 5% of controls. ^[2]

Geography changes access rather than incidence: mother and baby units, specialist perinatal teams and lithium monitoring are widely available in some health systems (the UK and much of Europe) and absent or sparse in others. ^{[1] [6]}

Postpartum psychosis is one of the few psychiatric disorders with a clear biological trigger - childbirth - acting on a vulnerable woman. ^[2] Risk is multifactorial, and no single factor is either necessary or sufficient.

Risk factors for postpartum psychosis ^{[2] [3]}:

• Personal history of bipolar disorder (the strongest single risk factor).
• Family history of bipolar disorder or of postpartum psychosis.
• A prior episode of postpartum psychosis.
• Primiparity.
• Sleep loss (especially after long labours or night-time deliveries, and in women whose manias are triggered by sleep loss).
• Immune dysregulation, including autoimmune thyroiditis.

Only about one third of affected women have any psychiatric history and only one third of those were previously diagnosed with bipolar disorder, so absence of a history never excludes the diagnosis. ^[2]

Wider perinatal factors matter because they shape relapse and safety: substance use, domestic violence, social isolation, prior trauma, and a past personal or family history of severe mental illness. ^[1] Valproate should not be offered to women of childbearing potential for mental health problems, and carbamazepine should not be offered in pregnancy; lamotrigine can be used with careful level monitoring. ^[1] NICE CG192 asks about past or present severe mental illness, treatment by specialist services including inpatient care, and severe perinatal mental illness in a first-degree relative at the first contact in pregnancy and postpartum. ^[1]

The step from normal postpartum adaptation to psychosis is not well understood, and honesty about that matters. What the sources support is this:

1. Childbirth itself is the trigger. The disorder is tied to the puerperium rather than to pregnancy; symptoms typically appear after delivery, when the stressor is the transition, not gestation. ^[2]
2. Hormonal withdrawal creates a vulnerable window. The precipitous fall in oestrogen and progesterone after delivery does not differ in absolute level between healthy women and those who become ill; instead, some women are abnormally sensitive to the fluctuation. ^[2]
3. Sleep loss acts as a trigger. Sleep deprivation is a known trigger for mania, and longer labour and night-time birth have been associated with postpartum psychosis; sleep protection is therefore treatment, not just comfort. ^[2]
4. Immune dysregulation is the most active research area. Raised rates of autoimmune thyroiditis and abnormalities in T-cell and monocyte function, and up-regulation of immune-related genes, have been reported in postpartum psychosis. ^[2]
5. Bipolar vulnerability is the substrate. Most women who present go on to have bipolar spectrum episodes. A postpartum psychotic presentation should therefore be treated as bipolar disorder until proved otherwise. ^[2]

Clinically this maps to the picture: delirium-like cognitive change suggests an organic or autoimmune component, while manic, depressive or mixed mood symptoms reflect the affective core. ^[2]

Women rarely volunteer their symptoms; families often say "she is just not herself." ^[2] Typical features: ^{[2] [3]}

• Sudden change in the first days after delivery: not sleeping at all even when given the chance, restlessness, pressured or racing speech.
• Confusion and disorientation: losing her way around her home, not knowing the date, place or what has happened.
• Mood change: irritable or elevated (mania), depressed, or a rapidly fluctuating mixed state.
• Abnormal thought content: persecutory delusions (that the baby is poisoned, that cameras are watching), grandiose or bizarre delusions (the baby is cursed, the Devil), sometimes delusions of reference.
• Hallucinations, which in postpartum psychosis are often non-auditory - visual, olfactory or tactile.
• Disorganisation: inability to care for herself or the baby, bizarre behaviour.
• Catatonia in a minority.
• Ego-syntonic ideas of harm: the thought of harming the baby or herself may feel necessary, commanded or justified, rather than horrifying. This is what separates psychosis from obsessive-compulsive disorder (see below).

Early warning symptoms include insomnia, anxiety, irritability and mood fluctuation. ^[2]

On examination the findings are of an acute psychotic syndrome, often with delirium-like features, rather than of chronic schizophrenia: ^{[2] [3]}

• Appearance and behaviour: agitated, pacing, or conversely mute and catatonic; neglect of self-care; poor or absent eye contact; possible motor retardation or stupor.
• Speech: rapid, pressured, difficult to interrupt; circumstantial or incoherent in severe cases.
• Mood: euphoric, irritable, depressed or incongruous; lability.
• Thought form: disorganised, with loose associations or thought blocking.
• Thought content: delusions (paranoid, grandiose, bizarre, or concerning the baby or birth), ideas of reference, nihilistic or guilt-ridden thoughts.
• Perception: non-auditory hallucinations (visual, olfactory, tactile) are characteristic; auditory hallucinations may occur.
• Cognition: impaired attention, disorientation, fluctuating consciousness; formal cognitive testing (for example a brief mental status examination) can help distinguish delirium.
• Insight and judgement: typically poor or absent; the woman may not recognise that she is ill.
• Risk: explicit enquiry about suicide, infanticide, self-neglect and capacity to care for the infant.

This is the section that decides admission, safeguarding and how urgently treatment must start. Ask directly, in a non-judgmental way. ^{[1] [2] [3]}

Suicide. Ask about wish to die, thoughts, plan, means, intent, protective factors and, in the perinatal context, about less obvious plans. Suicide in the perinatal period is a leading cause of maternal death. ^[3] Apparent "cooperation" does not equal low risk: a woman can be calm, organised and still act. Involve the family and remove means where possible; document everything. ^[3]

Infanticide. The central distinction, used throughout this topic, is between: ^{[2] [3]}

• Ego-dystonic intrusive thoughts (postpartum obsessive-compulsive disorder): unwanted, frightening, often about the baby; the woman is horrified, does not want to act, and avoids triggers (for example refusing to bathe the baby).
• Psychotic ideas of harm: part of a delusion; the woman may feel compelled or justified in acting, may be calm rather than distressed, and lacks insight.

Ask explicitly, neutrally and without euphemism - for example, "Many new mothers have scary thoughts about their baby. Has that ever happened to you? Did any of those thoughts involve hurting the baby?" ^[2] The risk of infanticide related to postpartum psychosis is about 4%. ^[3] Consider deliberate harm and harm through neglect (not feeding, not waking, leaving the baby unattended) as well as stated intent.

Neglect and capacity. Can she feed, keep the baby warm, follow safety advice, and recognise danger? Does she accept help? Capacity to consent to treatment and to parent may be impaired, and safeguarding (child protection) obligations apply where there is risk to the baby; follow local protocols. ^{[1] [3]}

Other risks. Self-neglect, substance use, domestic violence and coercion, and the welfare of other dependent children. ^[1]

The first practical task is to tell a common, mild, self-limiting state (the baby blues) from depression/anxiety (common, treatable) and from postpartum psychosis (rare, an emergency). ^{[2] [3]}

Postpartum psychosis is most often a mood disorder, so a woman with it may present with predominantly depressive or manic features rather than with obvious hallucinations. ^[2] Where it is possible, the safest approach is to treat suspected postpartum psychosis as postpartum psychosis until proved otherwise, while continuing to exclude medical causes. ^{[1] [3]}

The diagnosis is clinical, made by history and mental state examination, not by a blood test. ^{[1] [3]} Investigations serve to exclude medical mimics and to prepare for treatment. ^{[2] [3]}

• Full physical and neurological examination, including tests of attention and cognition (for example a brief cognitive screen) to assess for delirium. ^{[2] [3]}
• Urine or blood toxicology to exclude drug-induced psychosis. ^[3]
• Complete blood count and comprehensive metabolic panel (including renal and liver function, glucose, electrolytes). ^[3]
• Urinalysis.
• Thyroid function: TSH, free T4 and thyroid peroxidase antibodies (autoimmune thyroiditis is commoner in postpartum psychosis). ^{[2] [3]}
• Ammonia level (late-onset urea cycle disorder and other metabolic causes). ^[3]
• Prolactin is relevant if prolactin-raising antipsychotics are already being taken. ^[1]
• Monitoring questionnaires (EPDS, PHQ-9) and bipolar screening (for example the Mood Disorder Questionnaire) where depression or bipolar disorder is possible; bipolar disorder must be screened for before starting an antidepressant. ^{[1] [3]}
• Brain imaging and, if neurological signs are present, testing for autoimmune (limbic) encephalitis (including lumbar puncture, EEG). ^{[2] [3]}
• Electrocardiogram before or during antipsychotic or lithium treatment when risk factors exist, in line with local practice.

Each result matters in a particular direction: abnormal thyroid or metabolic tests, fever or leucocytosis point to an organic cause; a normal physical examination supports a primary psychiatric diagnosis but never replaces clinical judgement.

NICE CG192 directs clinicians to be alert for postpartum psychosis in the first two weeks after birth in any woman with past or present severe mental illness or a family history of severe perinatal mental illness in a first-degree relative, and to refer for immediate assessment within four hours if there is a sudden onset of symptoms suggesting it. ^[1]

Severity is judged by function and risk rather than by a score: confusion, inability to care for herself or her baby, any suicidal or infanticidal idea, or any psychotic feature makes the case an emergency. ^{[1] [2] [3]} Postpartum psychosis is always severe mental illness. Women with a personal or family history of bipolar disorder, or a prior episode, are in the highest risk group and should have a written perinatal care plan. ^[1]

Postpartum psychosis is a psychiatric emergency requiring inpatient hospitalisation. ^{[2] [3]} The sequence matters more than any single drug:

1. Keep her safe. Do not leave her alone; do not leave the baby alone with her; involve her partner or family, and remove or secure means of harm. ^{[2] [3]}
2. Get specialist help now: inpatient psychiatric consultation if she is on a maternity ward, or referral to the emergency department/crisis team if she is at home; in either case assessment should be arranged the same day. ^{[1] [2] [3]}
3. Complete the medical work-up above to exclude delirium, infection, thyroid disease, metabolic causes and autoimmune encephalitis. ^{[2] [3]}
4. Start treatment according to the local protocol and begin safety monitoring, including for rapidity of change in mental state.
5. Admit to a mother and baby unit (see below) or, if none exists, to general psychiatry with a plan that keeps mother and baby relationships and feeding in mind. ^{[1] [3]}
6. Safeguarding: follow local child-protection protocols where there is risk; this is a clinical duty, not a formality. ^[1]

Postpartum psychosis always needs medication; psychosocial support alone is not enough. ^{[2] [3]} NICE CG192 gives the principles: use the drug with the lowest risk profile for that woman, prefer a single drug, use the lowest effective dose (but not a sub-therapeutic one), and consider that doses often need adjusting because pregnancy changes drug handling. ^[1] Evidence comes from small studies only, so algorithms differ in detail, and different sources present the same drugs in different sequences.

• Benzodiazepines are used for severe anxiety, agitation and to restore sleep: lorazepam 0.5 to 1.5 mg three times daily in the commonly cited 3-step protocol. ^[2] NICE restricts benzodiazepines to short-term use for severe anxiety and agitation in pregnancy and the postnatal period. ^[1]
• Antipsychotics: an antipsychotic is offered if a pregnant or postpartum woman develops mania or psychosis and is not taking treatment, and high-potency agents (haloperidol 2 to 6 mg daily) or olanzapine 10 to 15 mg daily are the ones most cited for postpartum psychosis. ^{[1] [2]} For women with bipolar disorder who are stable on an antipsychotic and at risk of relapse, NICE advises continuing it. ^[1]
• Lithium is the mood stabiliser with the most evidence in postpartum psychosis and prophylaxis. Target serum level 0.8 to 1.2 mmol/L acutely, with possible reduction to 0.6 to 0.8 mmol/L once in remission if side effects require; about 98% respond. Continue monotherapy for about 9 months (NICE service and research sources give 6 to 9 months depending on presentation). ^{[2] [3]}
• Electroconvulsive therapy is appropriate for severe depression, severe mixed states or mania, for catatonia, or where response is inadequate; it is the most rapidly effective treatment in small studies. ^{[1] [2]}
• Avoid antidepressants without a mood stabiliser in postpartum psychosis, because they can worsen mania/psychosis. ^[3]

A widely cited 3-step protocol (Osborne/Bergink) runs: lorazepam for 3 days (about 4 of 64 women remitted), then add an antipsychotic on day 4 (about 12 of 60 more remitted), then add lithium after two weeks of non-response targeting 0.8 to 1.2 mmol/L (47 of 48 remitted); electroconvulsive therapy reserved for non-response after 12 weeks. ^[2] North American perinatal psychiatrists often add lithium earlier, because most patients respond to it and the recommended timetables assume longer admissions than many systems allow. ^[2] Both approaches agree on the same key points; where they differ is overt: the staging and the speed of lithium introduction. That disagreement is one of degree and setting, not of which drugs. ^{[2] [3]}

NICE recommends an antipsychotic as prophylaxis when a woman with bipolar disorder stops lithium for pregnancy or plans to breastfeed, and that an antipsychotic dose be increased or changed if mania breaks through. ^[1] Depot antipsychotics should not be offered to women planning a pregnancy, pregnant or considering breastfeeding unless she responds well to a depot and has a previous history of non-adherence. ^[1]

Women who need inpatient care for a mental health problem within 12 months of childbirth should normally be admitted to a specialist mother and baby unit, unless there are specific reasons not to. ^[1] These units are the best-practice setting in much of the developed world: they promote mother-baby attachment and breastfeeding during treatment for severe mental illness, and they deliver specialist perinatal psychiatric care. ^[2] NICE specifies that specialist inpatient services: ^[1]

• provide facilities designed specifically for mothers and babies, typically 6 to 12 beds;
• are staffed by specialist perinatal mental health staff;
• are staffed to provide appropriate care for babies;
• have effective liaison with general medical and mental health services;
• are closely integrated with community-based mental health services to ensure continuity of care and minimum length of stay.

Networks cover populations with 25,000 to 50,000 live births. ^[1] Where a unit is unavailable, there must be an advance, agreed, multi-agency plan for safe admission and baby care; separating mother and baby at this point worsens distress, bonding and outcomes. ^{[1] [2] [6]}

RCOG Good Practice Paper No. 14 (originally 2011; archived 3 October 2024) now directs obstetricians to NICE CG192 and the Royal College of Psychiatrists' perinatal mental health service standards. ^[6] It underlines that every obstetric unit should have a clearly defined referral pathway to specialist perinatal mental health services (or general psychiatry where none exist), led by a named consultant psychiatrist, local protocols for risk identification, and training in collaboration with perinatal services. ^[6] This is the cross-check with obstetrics: the same principles as the perinatal mental health topic apply, but from the obstetric side the key actions are recognition, referral and access, not specialist prescribing.

Medication and breastfeeding is a risk-benefit discussion, not a reason to stop effective treatment. ^{[1] [5]} NICE asks clinicians to discuss the benefits of breastfeeding, the risks of taking psychotropic medication when breastfeeding, the risks of stopping some medications in order to breastfeed, and to offer treatment that supports breastfeeding if the mother wishes. ^[1] The antipsychotic an uncomplicated woman was stable on in pregnancy generally continues postpartum; where an antipsychotic is needed for acute mania or psychosis, offer it. ^[1]

Lithium. NICE warns that lithium levels may be high in breast milk with a risk of toxicity for the baby, and that risk must be weighed openly. ^[1] A systematic review of clinical lactation studies found: ^[4]

• Lithium is excreted in human milk at a mean of about 50% (range 0.17 to 1.07) of the simultaneous maternal serum concentration. ^[4]
• The only study reporting relative infant dose (RID) gave a mean RID of 12.2% (range 0 to 30%), with 11 of 23 samples between 10% and 25%. ^{[4] [5]}
• Mean maternal dose was about 904 mg per day, mean maternal serum lithium 0.73 mEq/L, mean milk level 0.84 mEq/L, and mean infant serum lithium 0.23 mEq/L. ^[4]
• 80% of infants had serum lithium at or below 0.30 mEq/L without adverse effects; 20% had a transient adverse event (acute toxicity or thyroid alteration), and all of those had also been exposed to lithium in pregnancy. ^[4]

Guidelines therefore disagree, honestly: NICE and many international sources contraindicate or do not recommend lithium in breastfeeding because of the variability, while other sources and several expert reviews do not regard it as an absolute contraindication, especially in healthy, full-term infants over two months old, during lithium monotherapy and with maternal serum levels in range. ^{[1] [4]} The decision must be individualised. If lithium is used in breastfeeding, monitor mother and baby: ^[4]

• Keep the infant healthy and well hydrated (dehydration can precipitate lithium toxicity).
• For mother: serum lithium frequently after delivery, because postpartum clearance falls and levels can rise quickly; adjust the dose.
• For infant: periodic serum lithium, creatinine, urea and thyroid-stimulating hormone; reduce the proportion of breastfeeds if the infant level is raised.
• Use only in monotherapy where possible, and with a clear plan if the infant is preterm or ill, about which the evidence is absent.

Because lithium clearance rises 30 to 50% in late pregnancy and normalises after delivery, the postpartum dose can accumulate quickly if not re-titrated. ^[4] Neonates exposed in late pregnancy may also show transient lithium toxicity and need supportive care for 10 to 14 days. ^[4]

Antipsychotics. Specialist Pharmacy Service guidance (UK) states that quetiapine is the preferred second-generation antipsychotic and haloperidol the preferred first-generation antipsychotic during breastfeeding of full-term, healthy infants, and that most antipsychotics can be used during breastfeeding if clinically indicated. ^[5] Typical relative infant doses (proportion of the weight-adjusted maternal dose found in milk): ^[5]

• Haloperidol: 0.3 to 12% (doses up to 10 mg daily): variable, small to moderate; monitor for drowsiness, irritability, restlessness, gastrointestinal or extrapyramidal signs, poor feeding and developmental milestones.
• Quetiapine: about 0.4% (doses up to 400 mg daily): negligible; low infant serum levels.
• Olanzapine: 0.13 to 4% (doses up to 20 mg daily): very small; occasionally reported somnolence, poor feeding, constipation or developmental delay.
• Aripiprazole: 0.7 to 8.3% (doses up to 15 mg daily): variable, small; can increase or decrease prolactin, with multiple reports of reduced milk supply; other antipsychotics are preferred.
• Risperidone: 2.3 to 4.7% (doses up to 6 mg daily): very small, usually undetectable infant plasma. ^[5]
• Clozapine and depot antipsychotics: specialist advice. ^[5]

General lactation principles supported by these sources: ^{[1] [5]}

• Do not discourage breastfeeding solely because of antipsychotic treatment; if a woman is stable on a particular antipsychotic in pregnancy, it should not be changed postpartum for breastfeeding alone.
• Antipsychotics can worsen breastfeeding establishment; mental illness itself also does, so extra lactation support is usually needed.
• Antipsychotics increase prolactin; the clinical significance in breastfeeding women is unknown, but aripiprazole deserves special caution.
• Long half-lives raise the risk of accumulation and slow infant clearance; infants must be monitored, and preterm or unwell infants need individual advice.
• Sedating medications (including antipsychotics) mean avoiding co-sleeping, in accordance with NICE postnatal care advice. ^[5]
• Long-term neurodevelopmental data after infant exposure are limited; most studies report no effect, but individual case reports of delay exist.

• Review and reassess medication as soon as a woman with severe mental illness is medically stable after delivery; resume or adjust postpartum rather than stopping by default. ^[1]
• Continue lithium monotherapy for about 6 to 9 months after remission, with monitoring; prophylactic lithium is recommended immediately postpartum for women with prior postpartum psychosis. ^{[2] [3]}
• Women with a history of postpartum psychosis who discontinued treatment in pregnancy did not relapse if lithium was restarted immediately postpartum, whereas 44% of those with a mood disorder history relapsed when treatment was stopped in pregnancy and restarted after delivery. ^[3]
• Written care plans for women with severe mental illness, agreed in pregnancy with the woman and her family, should cover pregnancy, childbirth and the postpartum period, including contact details of key professionals. ^[1]
• Education of the woman, her partner and family about early warning signs ("she is not herself", not sleeping) and clear emergency routes should be documented and rehearsed. ^{[1] [2]}
• Sleep protection (supported nights, help with feeds) is an active part of relapse prevention, not a luxury. ^{[2] [3]}

• Suicide and infanticide, including harm through neglect; these are the principal dangers of the condition. ^{[2] [3]}
• Relapse and recurrence of postpartum or non-puerperal mood episodes; future bipolar illness in the majority. ^[2]
• Obstetric complications associated with untreated illness and with medications (for example gestational diabetes and excessive weight gain with antipsychotics). ^[1]
• Impaired bonding and child development, including where mother and baby are admitted apart. ^{[1] [2]}
• Neonatal toxicity after in-utero lithium exposure; neonatal adaptation with late antipsychotic exposure. ^{[1] [4]}
• Infant effects of medication in milk, usually mild and monitorable. ^{[4] [5]}
• Legal and safeguarding consequences for the woman and family, including the risk of permanent separation if care is delayed. ^[3]

With prompt detection and treatment, acute recovery rates are high and most women make a full recovery; nearly 80% retained full remission at 9 months in the largest published treatment cohort. ^[2] Longer-term outcome depends on relapse prevention, particularly lithium maintenance and sleep protection. ^{[2] [3]} Without treatment, symptoms persist, risks accumulate, and outcomes for mother and child worsen. Recurrence in a subsequent pregnancy is common and justifies pre-conception planning and prophylaxis. ^{[2] [3]}

• Ask about past or present severe mental illness and severe perinatal mental illness in first-degree relatives at first contact. ^[1]
• Be alert in the first two weeks postpartum where these risks exist, and refer for immediate assessment (within 4 hours) on sudden onset. ^[1]
• Screen widely for depression and anxiety in pregnancy and postpartum using validated tools and the NICE identification questions; a positive self-harm item needs immediate assessment. ^[1]
• Screen for bipolar disorder before starting antidepressants in perinatal depression, because antidepressant monotherapy can worsen bipolar illness. ^[3]
• Identify at-risk women early, agree a written care plan in pregnancy where possible, ensure sleep planning, and start prophylactic lithium immediately postpartum in highest-risk women. ^{[1] [2] [3]}
• Educate patients, partners and staff that "she is not herself" and "not sleeping when she can" are emergencies, not normal new motherhood. ^{[2] [3]}

• Women with bipolar disorder. Highest risk (20 to 30% per pregnancy). Pre-conception counselling, a written perinatal plan, continuation or resumption of effective medication, lithium with the monitoring described above, sleep protection, prophylactic lithium, and access to a mother and baby unit. ^{[1] [2] [3]}
• ** Women with no prior psychiatric history.** They make up about two thirds of presentations; the family history and primiparity may be the only clues. ^[2]
• ** Breastfeeding mothers.** Effective treatment outweighs any risk to the infant; choose medicines with favourable relative infant doses and monitor the baby. ^{[1] [5]}
• ** Preterm or unwell infants.** Lithium and antipsychotic safety data are essentially absent in this group; specialist advice is required. ^{[4] [5]}
• ** Families.** Partners need information and support; safeguarding and child-protection follow local protocols. ^{[1] [3]}

• Recognise without tests. The clinical picture and the non-negotiable red flags (not sleeping, confusion, paranoid or bizarre beliefs, especially about the baby) identify most cases; investigations come second. ^{[2] [3]}
• Keep her safe first: do not leave her alone, keep the baby safe, and use any available family member as a safe carer. ^{[2] [3]}
• Refer urgently to the highest level of care available; if a specialist or mother and baby unit is hours away, arrange transport, interim safe care and a written summary of medication given. ^{[1] [3]}
• Treat with what is available. If lithium cannot be monitored safely, use an antipsychotic with close follow-up; valproate and carbamazepine should not be first-line in women of reproductive potential. ^[1]
• ** Train non-specialists.** NICE principles and the WHO perinatal mental health approach (step by step care, identification, treatment and referral) are designed for non-specialist and resource-limited settings; brief training of midwives, nurses and community workers with supervision is feasible. ^{[1] [3] [6]}
• Arrange psychosocial care (sleep protection, family support, CBT-based self-help) where specialists are unavailable. ^{[1] [3]}
• Plan service arrangements in advance: a named contact, agreed local pathways, and a plan for a woman needing admission where no mother and baby unit exists. ^{[1] [6]}

• Postpartum psychosis is a rare (1 to 2 per 1,000 births) but life-threatening psychiatric emergency affecting both mother and baby. ^{[2] [3]}
• It most often begins 3 to 10 days postpartum; onset up to four weeks is accepted, and vigilance in the first two weeks is essential. ^{[2] [3]}
• The presentation is mood plus psychosis with delirium-like features: confusion, severe insomnia, mood change, disorganisation and bizarre or persecutory delusions, often about the baby. ^[2]
• Bipolar disorder (personal or family) is the strongest risk factor, yet two thirds of women have no prior psychiatric history. ^{[2] [3]}
• About 50 to 80% later have bipolar spectrum episodes; recurrence in a subsequent pregnancy is greater than 54% in some series. ^{[2] [3]}
• Autoimmune thyroiditis (19% versus 5%) and sleep loss are implicated; pre-eclampsia is an unsettled association. ^[2]
• Suicide and infanticide risks are high; the risk of infanticide related to postpartum psychosis is about 4%. ^[3]
• The key safety distinction is between ego-dystonic intrusive thoughts (obsessive-compulsive disorder) and psychotic ideas of harm, which may be acted on with little distress. ^{[2] [3]}
• Always exclude medical mimics: delirium, infection, thyroid disease, metabolic and autoimmune causes, and substance effects. ^{[2] [3]}
• Management is safety first, then urgent hospital admission, medical work-up and medication; treatment always needs drugs. ^{[1] [2] [3]}
• Core drugs: benzodiazepine for sleep/agitation, an antipsychotic (haloperidol 2 to 6 mg or olanzapine 10 to 15 mg in the commonly cited protocol), and lithium (0.8 to 1.2 mmol/L acutely, about 6 to 9 months continuation); electroconvulsive therapy for severe or resistant cases. ^{[1] [2] [3]}
• Guidelines differ on sequencing of lithium introduction; they agree that lithium is the central drug and should be introduced early. ^{[2] [3]}
• Admission within 12 months of childbirth should normally be to a specialist mother and baby unit; networks cover 25,000 to 50,000 births with 6 to 12-bed units. ^[1]
• For breastfeeding, treat effectively rather than stop effective medication: lithium transfer is variable (mean RID about 12.2%, range 0 to 30%) and guidelines disagree; most antipsychotics transfer in small amounts (quetiapine about 0.4%, olanzapine 0.13 to 4%, haloperidol 0.3 to 12%) and can be used with infant monitoring. ^{[1] [4] [5]}
• Avoid valproate and carbamazepine as first-line in women of reproductive potential; lamotrigine with level monitoring; avoid depot antipsychotics unless non-adherence. ^[1]
• Pre-conception counselling, a written perinatal care plan and immediate postpartum prophylactic lithium are the backbone of preventing recurrence. ^{[1] [2] [3]}
• RCOG Good Practice Paper No. 14 (2011, archived 2024) directs obstetricians to NICE CG192 and RCPsych perinatal service standards, emphasising referral pathways, named consultants and local protocols. ^[6]

Related MedGrasp topics (plain text, pending verified links): perinatal mental health; bipolar disorder (diagnosis and prophylaxis); depression in adults; schizophrenia and psychosis; obsessive-compulsive disorder; breastfeeding, lactation and mastitis; thyroid disorders and postpartum thyroiditis; epilepsy in women; drugs and teratogens in pregnancy; maternal and neonatal care; safeguarding and child protection.