Understanding Postpartum Psychosis: Symptoms, Treatment and the Clancy Case

A Massachusetts courtroom has become the unlikely stage for a national conversation about one of the rarest and most severe mental health crises a new mother can face. Lindsay Clancy, 36, stands accused of strangling her three children—Cora, five; Dawson, three; and Callan, eight months old—in their Duxbury home in January 2023. The prosecution contends she planned the killings methodically. Her defense team argues something else entirely: that Clancy was not criminally responsible because she was experiencing postpartum psychosis, a condition so acute it fundamentally altered her grip on reality.

Postpartum psychosis is not the same as postpartum depression, though the two are often conflated in public conversation. Where depression is more common and more widely discussed, psychosis is rare—striking roughly one to two in every thousand mothers after childbirth. It is also far more severe. In Clancy's case, the condition announced itself gradually. In September 2022, months before the deaths, she sought treatment for anxiety. A prescriber gave her an antidepressant, then increased the dose when the medication failed to help. Her ex-husband Patrick Clancy testified that she began experiencing what clinicians call intrusive thoughts—unwanted mental images of harming her children or something terrible befalling them. These thoughts were vivid enough, persistent enough, that she confided them to her husband. She was admitted first to a facility for suicidal ideation, then to a psychiatric hospital. The condition, it seemed, was escalating.

The symptoms of postpartum psychosis read like a catalog of fractured consciousness. Rapid mood swings that swing between mania and crushing depression. Depersonalization—the sensation of watching oneself from outside one's own body. Insomnia so complete that sleep becomes impossible. Paranoia that transforms the familiar world into something hostile and unknowable. And thoughts of harming oneself or, most distinctively, one's children. These are not fleeting worries or the ordinary anxieties of new parenthood. They are intrusive, relentless, and they can feel entirely real to the person experiencing them.

What makes postpartum psychosis a medical emergency, according to mental health professionals, is precisely this: it requires immediate intervention in a way that postpartum depression, anxiety, or obsessive-compulsive disorder often do not. Those conditions may be managed in outpatient settings, with therapy and medication adjusted over time. Postpartum psychosis cannot wait. It demands hospitalization, intensive monitoring, and rapid treatment. The condition is treatable—experts emphasize this point—but only if it is recognized and addressed before it spirals.

The Clancy trial, now in its closing arguments after eighteen days of testimony, has cracked open a conversation that many mothers have been having quietly, often alone. On social media, women have begun sharing their own experiences: hallucinations that felt absolutely real, paranoid convictions that their partners meant them harm, suicidal thoughts that arrived unbidden and unwelcome. Some described feeling untethered from reality itself, as though they were watching their own lives from behind glass. These accounts reveal a gap in the American approach to maternal health—one that prioritizes the infant's wellbeing while leaving the mother's mental state in shadow. As one psychology professor noted, the emphasis in postpartum care falls almost entirely on the child, leaving new parents without adequate mental health support at their most vulnerable moment.

For those experiencing symptoms of postpartum depression that persist beyond two weeks or interfere with daily life, the guidance is straightforward: seek professional help. For those having thoughts of self-harm or harm to others, the instruction is more urgent: seek help immediately. The 988 Suicide and Crisis Lifeline operates around the clock, offering free and confidential support to anyone in acute distress. The condition is rare enough that most people will never encounter it. But for those who do, the difference between recognition and silence, between intervention and delay, may be the difference between recovery and catastrophe.