9 Child and adolescent psychiatry9.1 Effects of parental mental disorder on children
9.1.1 Parental illness across developmental stages
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Written by Resident Doctor Committee · Published
New in the 2027 syllabus
The College added this topic for exams from January 2027.
How parental illness affects children
Parental mental illness affects children through several routes that interact: inherited risk, exposures before birth, changes in caregiving and the family's social circumstances. The effects vary with the child's developmental stage and the support available.
Diagnosis is only part of the picture. Severity and persistence matter too, because symptoms may disrupt care on and off or over a long period.
What it can look like at each stage
Stage | Possible difficulty | What support should address |
|---|---|---|
Infancy | Feeding, settling and back-and-forth interaction with the parent may be disrupted | Sensitive care, routines and a reliable alternative carer when needed |
Preschool | Separation fears, regression or self-blame may appear | Simple explanations, predictable care and reassurance that the child is not responsible |
School age | Worry, poor concentration, attendance problems or secrecy may develop | School support, trusted adults and a clear plan for crises |
Adolescence | Caring duties may clash with independence, friendships and education | Confidential conversations, practical help and protecting ordinary chances to grow up |
Assessment
Hear from the child directly, at a level that suits their development. A child who seems to be coping may be hiding worry or carrying too much responsibility.
Young caring can mean watching a parent's mood, doing housework or looking after siblings. Judge it by what is asked of the child, not by whether anyone calls them a carer.
Protective care may come from the other parent, relatives, school or the wider community. Identify it before a predictable crisis happens.
Intervention
Explain the illness in words the child can understand. Make clear that the child did not cause it and is not responsible for curing it.
Agree a family plan that says who will look after the child, how they will keep in contact with the parent and who they can go to for help.
Treat the parent and support their parenting, while also assessing the child's own needs.
Safeguarding follows identified harm or risk. Do not assume that a parental diagnosis on its own proves care is unsafe.