Postpartum depression (perinatal depression)
Depression that begins in pregnancy or in the months after a birth, in mothers and in fathers. It brings low mood or loss of interest most of the day for at least two weeks, with changes in sleep, appetite and energy beyond what a newborn explains, guilt, feeling worthless as a parent, and sometimes thoughts of death. It differs from the baby blues, a few tearful days after birth that pass within about two weeks.
What drives it
Sleep loss, hormonal shifts, a hard birth, money worry, little help and a history of depression stack on top of each other at a time when the parent expects to feel happiest. Useful for identification because the gap between what a new parent ‘should’ feel and what they do feel often keeps them from saying anything, and fathers are asked even less often.
How it shows
Work
Dreading the end of parental leave, or the reverse, counting the days until work as an escape and feeling ashamed of it. A father back at work a week after the birth who becomes irritable, drinks more and stays late.
Relationships
Feeling like a stranger to the baby and certain everyone else bonds more easily. Telling the pediatrician ‘I’m fine, just tired’. Two parents low at once, each thinking the other is coping.
Self
Notice whether you can sleep when the baby sleeps or lie awake anyway, whether anything still gives you pleasure, and whether the thought ‘they’d be better off without me’ has come up.
What tells it apart
Major depression: The symptoms are the same as major depression. Postpartum depression is more likely the name when the episode started in pregnancy or the first year after the birth, which matters for screening, for treatment choices when breastfeeding, and for the partner.
Psychosis: Postpartum psychosis is rare, about one or two in a thousand births, and usually starts within the first few weeks with confusion, strange beliefs, hearing or seeing things, or sudden elation. It may be a medical emergency that needs same-day care. Depression is more likely when thinking stays clear and the mood is low.
Parental burnout (Mikolajczak and Roskam): Parental burnout can come at any age of the child and centers on exhaustion with parenting. In the first year after a birth, low mood across the whole of life may be postpartum depression.
A test
Ask whether the low mood or loss of interest has lasted most days for two weeks or more since the pregnancy or birth, and whether it goes beyond tiredness. The Edinburgh Postnatal Depression Scale, also used with fathers, could be a first screen, and a doctor or midwife can assess it.
Questions to carry
- When the baby finally slept today, what did I feel in the first minute?
- What have I stopped telling the people around me since the birth?
Go deeper
- Read: The Kazdin Method for Parenting the Defiant Child, Alan E. Kazdin with Carlo Rotella, 2008. Written for parents by a Yale psychologist who spent decades testing parent management training: praise and small rewards for the behavior a parent wants to see, built up in small steps. That approach has many controlled trials behind it with children referred for defiance and aggression, though Kazdin's own 1997 review said questions remained about how large, wide and lasting the effects are. The book itself does not walk through the studies. It carries the Association for Behavioral and Cognitive Therapies' Self-Help Seal of Merit.
How strong the research is
strong. A meta-analysis of 565 studies from 80 countries (Wang and colleagues, Translational Psychiatry, 2021) put the rate at about 17%, with wide differences by region and higher rates in lower-income countries. Another (Shorey and colleagues, Journal of Psychiatric Research, 2018) found about 17% among 37,294 healthy mothers with no history of depression. For fathers, a meta-analysis of 43 studies and 28,004 parents (Paulson and Bazemore, JAMA, 2010) found about 10.4%, highest at three to six months after the birth, and moderately linked with depression in the mother. Many studies use screening questionnaires rather than diagnostic interviews, which can push the figures up.
Where it comes from
Named in psychiatry over the twentieth century. DSM-5 (American Psychiatric Association, 2013) adds ‘with peripartum onset’ to a depressive episode that starts in pregnancy or within four weeks of the birth. ICD-11 (World Health Organization) codes depression starting within about six weeks after delivery under 6E20. Research and services usually count the whole first year