What the diagnostic manual actually says about postpartum depression, anxiety, and psychosis—and w hatevidence-based care looks like for each.
As jurors in Plymouth, Massachusetts continue deliberations in the Lindsay Clancy murder trial, the country is again talking about what can happen after childbirth. Clancy, a former labor and delivery nurse, does not dispute that she killed her three children in January 2023. Her defense argues she was in the grip of postpartum psychosis and not criminally responsible. Prosecutors argue she knew what she was doing.
This article is not a verdict on that case. No clinician can diagnose someone from news coverage. What the trial does do is force a clearer public conversation: postpartum depression, postpartum anxiety, and postpartum psychosis are not the same illness, they are not equally common, and they are not managed the same way. The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR) is the standard clinicians use. It is more precise—and more limited—than the language that appears in headlines (American Psychiatric Association [APA], 2022).
What DSM-5-TR actually classifies
Baby blues are not a DSM diagnosis. Mood swings, tearfulness, irritability, and poor sleep in the first days after delivery affect a large majority of new parents and usually fade within two weeks (Mayo Clinic, 2024). That is not depression.
Postpartum depression is major depressive disorder with a timing specifier. DSM-5-TR does not list “postpartum depression” as its own disease. It uses the specifier with peripartum onset when a major depressive episode begins during pregnancy or within four weeks after delivery (APA, 2022; Mayo Clinic Proceedings, 2014). Clinicians and public-health agencies often treat onset anytime in the first year as clinically postpartum, because that is when many women first become ill (American Academy of Family Physicians [AAFP], 2023; American College of Obstetricians and Gynecologists [ACOG], 2023a).
A major depressive episode requires five or more of the following during the same two-week period, representing a change from prior functioning, with at least one symptom being depressed mood or loss of interest or pleasure: depressed mood; anhedonia; significant change in appetite or weight; insomnia or hypersomnia; psychomotor agitation or slowing; fatigue; worthlessness or excessive guilt; poor concentration; and recurrent thoughts of death or suicide (APA, 2022). Symptoms must cause distress or impairment and not be better explained by a substance or medical condition. About one in seven people who give birth develop postpartum depression (Mayo Clinic, 2024).
Postpartum anxiety has no peripartum specifier. DSM-5-TR anxiety disorders—generalized anxiety disorder (GAD), panic disorder, and related conditions—use the same adult criteria after birth as they do at any other time. GAD requires excessive, hard-to-control worry more days than not for at least six months, plus associated symptoms such as restlessness, fatigue, poor concentration, irritability, muscle tension, or sleep PERINATAL MENTAL HEALTH Educational article disturbance (APA, 2022). That six-month rule is a poor fit for the fourth trimester, so many perinatal clinicians diagnose when the rest of the picture is clear and functioning is impaired, even if the clock has not hit six months (Misri et al., 2015; ACOG, 2023a). Cleveland Clinic estimates postpartum anxiety in about one in five women; other reviews put any postpartum anxiety disorder closer to 11–17% (Cleveland Clinic, 2025; Fawcett et al., 2019). Unwanted, ego-dystonic thoughts of the infant being harmed are common in postpartum anxiety and obsessive-compulsive presentations. Those thoughts are usually terrifying to the parent. They are not the same as a psychotic command.
Postpartum psychosis is also not a standalone DSM-5-TR diagnosis. It is coded as another psychotic or mood disorder with peripartum onset—most often bipolar I disorder with psychotic features, major depression with psychotic features, or brief psychotic disorder with postpartum onset (APA, 2022). Onset is typically abrupt, often within days to two weeks of delivery and by definition within four weeks for the specifier. Core features include delusions, hallucinations, disorganized speech or behavior, severe insomnia, confusion that can look like delirium, and rapid mood shifts (Cleveland Clinic, 2022; Sit et al., 2006). It is rare: roughly 1 to 2 cases per 1,000 births (Cleveland Clinic, 2022). An international expert panel has argued that this coding system under-identifies the syndrome and has proposed distinct criteria with onset within 12 weeks of birth (Bergink et al., 2025; Spinelli, 2021). Until DSM changes, clinicians still treat the syndrome as a psychiatric emergency.
The practical difference is insight and reality testing. A parent with depression or anxiety is usually horrified by intrusive thoughts. A parent in psychosis may believe a delusion is true—that the infant is possessed, that death is a form of protection, or that an outside force is directing their actions.
What to do
Screening is the first step, not the last. ACOG recommends screening for perinatal mood and anxiety disorders at least once in pregnancy and once postpartum with a validated tool such as the Edinburgh Postnatal Depression Scale, PHQ-9, or GAD-7, and asking directly about suicide, infant harm, mania, and psychotic symptoms (ACOG, 2023a). Partners and family should take persistent symptoms past two weeks, inability to care for the infant, or any talk of death seriously (Mayo Clinic, 2024).
Postpartum psychosis is an emergency. Do not leave the parent and infant unsupervised. Call 911 or go to an emergency department. For suicidal crisis, call or text 988. Postpartum Support International (1-800-944-4773) can connect families to perinatal clinicians.
Treatment and prognosis, by condition
Depression. Mild to moderate illness often responds to interpersonal psychotherapy or cognitive behavioral therapy; more severe illness usually needs medication as well (Mayo Clinic, 2024; AAFP, 2023). Sertraline is the most common first-line antidepressant in lactation because of a long safety record and low breast-milk transfer; most SSRIs are considered compatible with breastfeeding when the parent and clinician weigh risks and benefits (Mayo Clinic, 2024; ACOG, 2023b). Zuranolone, an oral neuroactive steroid taken for 14 days, is FDA-approved for postpartum depression and is an option ACOG now recommends considering for severe depression with onset in the third trimester or within four weeks after birth, particularly when rapid response matters (ACOG, 2025). With timely care, most episodes improve over months; untreated illness can last far longer and raise the risk of a later major depressive episode. Recurrence in a subsequent pregnancy is substantial, often cited in the 30–50% range for those with a prior postpartum episode (AAFP, 2023).
Anxiety. First-line care is the same architecture: CBT for mild to moderate symptoms; an SSRI—typically sertraline or escitalopram—when symptoms are moderate to severe or therapy is not enough (ACOG, 2023b; Cleveland Clinic, 2025). Prognosis is good when treatment is started. Untreated perinatal anxiety predicts later depression and is linked to poorer infant sleep, feeding, and developmental outcomes (ACOG, 2023a).
Psychosis. This is inpatient psychiatry until the person is safe. The best-supported acute sequence is a benzodiazepine for agitation and insomnia, an antipsychotic for psychosis, and lithium as the mood stabilizer with the strongest postpartum evidence. In a widely cited Dutch stepwise cohort, 98% of hospitalized patients reached clinical remission with that algorithm (Bergink et al., 2015; Jairaj et al., 2023). Electroconvulsive therapy is appropriate for catatonia, high suicide risk, or psychotic depression that is not turning (Jairaj et al., 2023). Lithium also has the best evidence for preventing another postpartum episode. Acute prognosis with treatment is often surprisingly good—many women are much improved within weeks—but the long view is more complicated. A large share later meet criteria for bipolar disorder; recurrence after a later birth is commonly 30–50%; suicide risk in the depressive-psychotic subtype is on the order of 4–5%, and the risk of harm to the infant, while still uncommon, is several times higher than in non-psychotic postpartum illness (Cleveland Clinic, 2022; Brockington, 2017). Half or more of women with a first postpartum psychosis have no further episodes outside the postpartum window, which is why prevention planning for the next pregnancy matters as much as the acute admission (Bergink et al., 2025).
The point of getting the names right
Most parents who struggle after birth have depression or anxiety, not psychosis. Most will recover with ordinary, evidence-based care. Psychosis is rare, sudden, and treatable, but it is not “severe depression with a different name.” Collapsing the three conditions into one story either minimizes everyday suffering or treats every exhausted, anxious new parent as a danger. Neither helps the people who need a therapist, an SSRI, or an emergency room tonight.
If you are pregnant or postpartum and not yourself—or you love someone who isn’t—tell a clinician. The DSM language is technical. The treatment is not mysterious. Early care changes the ending.
References
American Academy of Family Physicians. (2023). Peripartum depression: Detection and treatment. American Family Physician, 108(3), 267–274.
American College of Obstetricians and Gynecologists. (2023a). Screening and diagnosis of mental health conditions during pregnancy and postpartum (Clinical Practice Guideline No. 4). Obstetrics & Gynecology, 141(6), 1232–1261.
American College of Obstetricians and Gynecologists. (2023b). Treatment and management of mental health conditions during pregnancy and postpartum (Clinical Practice Guideline No. 5). Obstetrics & Gynecology, 141(6), 1262–1288.
American College of Obstetricians and Gynecologists. (2025). Zuranolone and brexanolone for the treatment of postpartum depression (Clinical Practice Update). Obstetrics & Gynecology, 146, e24–e28.
American Psychiatric Association. (2022). Diagnostic and statistical manual of mental disorders (5th ed., text rev.).
Bergink, V., Burgerhout, K. M., Koorengevel, K. M., Kamperman, A. M., Hoogendijk, W. J., Lambregtse-van den Berg, M. P., & Kushner, S. A. (2015). Treatment of psychosis and mania in the postpartum period. American Journal of Psychiatry, 172(2), 115–123.
PERINATAL MENTAL HEALTH Educational article Not a substitute for clinical care · Crisis: 988 Page 4 Bergink, V., and colleagues. (2025). Postpartum psychosis and bipolar disorder: Review of neurobiology and expert consensus statement on classification. Biological Psychiatry.
Brockington, I. (2017). Suicide and filicide in postpartum psychosis. Archives of Women’s Mental Health, 20(1), 63–69.
Cleveland Clinic. (2022). Postpartum psychosis.
Cleveland Clinic. (2025). Postpartum anxiety.
Fawcett, E. J., Fairbrother, N., Cox, M. L., White, I. R., & Fawcett, J. M. (2019). The prevalence of anxiety disorders during pregnancy and the postpartum period: A quantitative systematic review. Journal of Clinical Psychiatry, 80(4), 18r12527.
Jairaj, C., Seneviratne, G., Bergink, V., Sommer, I. E., & Dazzan, P. (2023). Postpartum psychosis: A proposed treatment algorithm.
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Mayo Clinic. (2024). Postpartum depression: Symptoms and causes; diagnosis and treatment.
Mayo Clinic Proceedings. (2014). Concise review for physicians and other clinicians: Postpartum depression. Mayo Clinic Proceedings, 89(8).
Misri, S., Abizadeh, J., Sanders, S., & Swift, E. (2015). Perinatal generalized anxiety disorder: Assessment and treatment. Journal of Women’s Health, 24(9), 762–770.
Sit, D., Rothschild, A. J., & Wisner, K. L. (2006). A review of postpartum psychosis. Journal of Women’s Health, 15(4), 352–368.
Spinelli, M. (2021). Postpartum psychosis: A diagnosis for the DSM-V. Archives of Women’s Mental Health, 24(5), 817–822.