Postpartum psychosis is a severe psychiatric emergency associated with an increased risk of suicide, estimated at around 5 percent, and, more rarely, infanticide, estimated at around 4 percent. The vast majority of affected women never harm their children. Unlike many psychotic disorders, however, postpartum psychosis frequently organizes around the infant, making the mother’s strongest attachment the central focus of her psychotic symptoms. Studies of psychotic symptom content have identified recurring themes involving the baby, including fears that the infant is harmed or beyond saving, beliefs that the baby is possessed or demonic, convictions that the child has been replaced or does not belong to the mother, and delusions that ordinary events hold extraordinary significance related to the infant or motherhood.

Among women who commit infanticide in the immediate postpartum period, postpartum psychosis has been identified as a significant contributing factor, with some studies estimating that approximately two-thirds of these cases involve psychotic illness. The literature suggests that delusions involving the infant, religious and persecutory delusions, and command hallucinations may transform the infant into an object of danger, contamination, salvation, or divine significance. Within this altered reality, destructive acts may be experienced by the mother as morally necessary, protective, or salvific despite being objectively tragic and unlawful. This phenomenology differs fundamentally from motives more commonly associated with criminal homicide, such as anger, revenge, financial gain, or sadism.

From a cognitive neuropsychiatric perspective, delusions can be understood as disruptions in the mechanisms underlying normal belief formation, evaluation, and revision, arising from identifiable changes in brain function. Brockington and colleagues found that women with postpartum psychosis demonstrated greater mood lability, distractibility, confusion, impaired sensorium, bizarre delusional content, and memory impairment than patients with psychosis unrelated to pregnancy. Wisner and colleagues reported that psychosis with onset following childbirth was characterized by marked thought disorganization, delusions of reference, persecutory delusions, and higher rates of homicidal ideation and behavior. Additional reports have described visual, tactile, and olfactory hallucinations, presentations resembling delirium, and higher rates of delusions of control, in which an external force seems to direct the mother’s thoughts or actions. In some cases, command hallucinations instruct the mother to harm herself or her infant, experienced as authoritative or impossible to resist.

Several hypotheses have been proposed to explain why mothers with postpartum psychosis become intensely fixated on their infants. One explanation holds that psychosis tends to organize around a person’s deepest fears, hopes, attachments, and emotionally meaningful relationships, making the infant the mother’s primary attachment a natural focus. A second emphasizes the unique biology of the postpartum period, in which the normal maternal drive to protect, monitor, and bond may become hyperactivated and distorted by severe mental illness. Women with postpartum psychosis have been described as conscientious, intensely attached to their infants, and consumed by heightened maternal responsibility. This interpretation is supported by findings of significantly less impairment in mother-infant bonding among women with postpartum psychosis than among women with severe postpartum depression. A third, psychodynamic perspective conceptualizes the infant as the focus of unconscious conflict during a profound developmental transition, in which motherhood activates latent fears of inadequacy, guilt, dependency, and aggression.

One of the defining phenomenological features of postpartum psychosis is the transformation of the infant from an ordinary child into the central object of the mother’s psychotic experience. This transformation shares features with delusional misidentification syndromes, in which the identity of a familiar person is fundamentally altered within the individual’s delusional reality. In a systematic review, nearly half of reported postpartum psychosis cases involved some form of infant misidentification. Chandra and colleagues found that 53 percent of women with postpartum psychosis experienced delusions involving their infant, and that the most common psychotic perception was that the infant was a devil or was ill-fated. Mothers who believed their infant was the devil, ill-fated, or someone else’s baby were more likely to engage in serious abusive behavior and to be judged unsafe to care for the infant independently.

Importantly, mothers who do not become violent often describe similar psychotic content. In the author’s qualitative study of women who had recovered from postpartum psychosis, mothers who never harmed their infants nevertheless reported intrusive urges or psychotic thoughts of placing the baby in a wood stove, stabbing the infant, driving off a bridge with the infant, or experiencing an overwhelming need to get the baby away from them. These experiences occurred within the context of acute psychosis and were profoundly ego-dystonic once the illness resolved. The content of infant-focused delusions appears to overlap substantially between women who commit infanticide and those who do not, suggesting that the presence or absence of violence may depend on the trajectory of the psychotic process and the timing of intervention rather than on maternal attachment or intent.

Two composite clinical vignettes illustrate these contrasting pathways. Esther developed postpartum psychosis within weeks of giving birth to her first child, progressing from severe anxiety, obsessive thoughts, and profound insomnia into paranoia and mania. She became convinced that the end of the world was imminent and that she and her daughter had been chosen by God, believing her baby was a prophet with miraculous abilities. She heard what she believed was the voice of God saying her nine-week-old baby could walk if she just let her go, reassured that it was okay if the baby died or if she died, because they would be saving the world from all evil. Her family recognized that something was seriously wrong, her obstetrician instructed her to present to the emergency department, and she was ultimately admitted to a residential mother-baby psychiatric unit where intensive treatment resolved her psychotic symptoms. She made a full recovery and later had another child without recurrence.

Mary’s course differed not because her symptoms were less severe, but because the pathway to intervention was not activated. Intensely devoted to her daughter and focused on providing the childhood she never had, Mary began experiencing severe anxiety and persecutory beliefs when her daughter was approximately four months old, becoming preoccupied with drones surveilling her neighborhood. Her thinking deteriorated rapidly in the days preceding the offense. She became convinced she was being watched through her phone and television, saw hazy smokiness coming from the vents, and interpreted a triangle on the father’s forehead as related to the devil. By the following morning, the psychosis had become profoundly religious and infant-centered. She believed she was in hell, that members of her family were demons, and that the devil was coming to take her daughter. She heard a clear voice telling her that the devil was going to eat the baby but that the baby could still go to heaven, followed by commands directing her to end both her daughter’s life and her own. She suffocated her daughter with a pillow and then attempted to end her own life. Within approximately three weeks of antipsychotic medication, her psychotic symptoms resolved, and she later described the person she had been during the preceding weeks as someone who was not her. She was charged with infanticide and remains involved in criminal proceedings.

The analysis argues that assessing the content of psychotic symptoms may improve violence risk assessment more than diagnosis alone, since delusions in which the infant has become transformed into a persecutory, demonic, contaminated, or possessed object may be more informative than the diagnosis of postpartum psychosis by itself. Improved screening is also essential, as the Edinburgh Postnatal Depression Scale was developed to screen for postpartum depression and includes only limited assessment of psychotic symptoms, while newer instruments such as the Postpartum Psychotic Experiences Scale aim to identify early or mild psychotic experiences during the postpartum period. Assessment should extend to family members, who frequently observe behavioral changes before the mother recognizes she is becoming ill, and should be educated about early warning signs including rapid sleep loss, increasing paranoia, religious or grandiose thinking, confusion, and infant-focused delusions. From a forensic perspective, the central question is not simply whether a mother experienced postpartum psychosis, but how the illness transformed her perception of herself, her infant, and the moral reality within which she acted. Because the risk associated with postpartum psychosis is largely state-dependent, for many women the risk of infant-directed violence resolves with successful treatment of the psychosis and does not necessarily reflect an enduring propensity for violence. Early identification and treatment remain the most effective means of preventing tragedy.

Subject of Research: postpartum psychosis

Article Title: Beyond criminal intent: infant-directed violence as a symptom of postpartum psychosis

Article References: Laufer, B. (2026). Beyond criminal intent: infant-directed violence as a symptom of postpartum psychosis. Frontiers in Psychiatry, 17, Article 1975069. https://doi.org/10.3389/fpsyt.2026.1975069

Image Credits: AI Generated

DOI: 10.3389/fpsyt.2026.1975069

Keywords: postpartum psychosis, infanticide, delusions, forensic psychiatry, command hallucinations, maternal mental health, psychosis, risk assessment, Beyond, criminal, intent, infant-directed