As the high-profile trial of Massachusetts mother Lindsay Clancy enters its fourth week, the horrific tragedy at the center of the case has dragged a little-discussed, life-threatening maternal mental health condition into the national spotlight: postpartum psychosis. The case, which has sparked urgent conversations about gaps in maternal mental health care, is renewing calls to formally classify the condition as a distinct disorder in American psychiatry’s official diagnostic handbook.
Clancy, who admitted to killing her three young children — 5-year-old Cora, 3-year-old Dawson, and 8-month-old Callan — in January 2023, has pleaded not guilty to three counts of murder. Her legal team argues that she was incapacitated by severe postpartum psychosis triggered after the birth of her third child, a condition that left her grappling with debilitating hallucinations and delusions. One month before the killings, Clancy explicitly told her mother Paula Musgrove and then-husband Patrick Clancy that she was experiencing intrusive thoughts of harming her children. Musgrove testified this week that her daughter repeatedly insisted the disturbing thoughts were not her own, saying “This isn’t me, I’ve never been like this before” — a claim Musgrove confirmed aligned with Clancy’s prior behavior.
Clinical and forensic psychologist Paul Zeizel testified Wednesday that Clancy’s condition left her unable to recognize the wrongfulness of her actions or adjust her behavior to comply with the law. Prosecutors, however, argue the killings were a premeditated, intentional act. What is not debated by medical experts is the dangerous nature of postpartum psychosis, which is classified as an urgent medical emergency. Symptoms of the condition include rapid-onset mania, depression, hallucinations, and fixed false delusions that pull patients completely out of touch with reality. Experts note the condition has a distinct “waxing and waning” pattern that can lull loved ones into a false sense of security: Patrick Clancy testified that on the day of the killings, his ex-wife appeared to be having one of her best days, playing outside with the children to build a snowman. Hours later, when he returned home from picking up dinner, he found his children dead and Clancy gravely injured from a suicide attempt.
That seemingly sudden shift is a classic hallmark of the condition, explained Jennifer Payne, a reproductive psychiatry expert at the University of Virginia. “A woman can appear fine one minute and be really ill a little bit later,” Payne said. While the exact causes of postpartum psychosis remain under-researched, experts have linked it to dramatic hormonal shifts after childbirth and a history of prior mental health conditions. In rare severe cases, between 1% and 4% of experiences with the condition result in harm or death to children or the mother, according to existing research.
The biggest barrier to better awareness, screening, and treatment, patients and providers agree, is that postpartum psychosis is not formally recognized as a distinct disorder in the American Psychiatric Association’s *Diagnostic and Statistical Manual of Mental Disorders (DSM-5)* — the definitive reference guide used by clinicians, medical schools, and insurance providers across the U.S. Advocates like Veerle Bergink, professor of psychiatry and director of the Mount Sinai Women’s Mental Health Center, have spent years pushing for the condition’s inclusion, arguing that formal classification is the foundational step to advancing care.
“You can only investigate and talk about the disease if you give the disease a name, and if it has criteria,” Bergink explained. Without formal listing in the DSM-5, the condition is often omitted from medical school curricula, fails to attract research funding, lacks a standard insurance billing code, and leaves patients without a clear pathway to care. For Meghan Cliffel, a postpartum psychosis survivor who experienced rapid-onset hallucinations and delusions eight months after giving birth to her second daughter in 2015, this lack of recognition feels like deliberate erasure.
Clifel recalled that within 24 hours of her first symptoms, she was handcuffed to a gurney and admitted to a psychiatric hospital, where she spent 12 days receiving treatment. She recovered with a multi-pronged care plan including therapy and lithium, and later safely had a third child by starting prophylactic lithium treatment immediately after birth. Even so, her road to recovery was marked by uncertainty: unlike common conditions such as breast cancer, which offer clear, step-by-step care pathways, postpartum psychosis leaves patients fumbling for support in the dark, she said.
Calling the lack of DSM-5 classification “bananas”, Cliffel said the Clancy trial is a critical turning point for the maternal mental health community. “We cannot be surprised when tragedy happens, and instead, we can proactively build to care for mothers and families,” she said. Experts stress that postpartum psychosis is a highly treatable condition: common interventions include mood stabilizers like lithium, antipsychotic medications, electroconvulsive therapy, and inpatient psychiatric care, and most patients fully recover with timely, appropriate intervention. Advocates now hope the attention from the Clancy trial will accelerate efforts to formalize the condition’s recognition, building a standardized care system that catches symptoms early and prevents future tragedies.