Munchausen by Proxy / Factitious Disorder Imposed on Another — When Illness Becomes the Weapon¶
TL;DR. Factitious Disorder Imposed on Another (FDIA, formerly "Munchausen by Proxy" / MBP) is codified in DSM-5 V300.19 and WHO ICD-11 6D52 (Caregiver-Fabricated Illness in a Child). In PA cases, illness fabrication is one of Baker's 17 strategies — used to cancel exchanges, paint the targeted parent as causing distress, and recruit medical professionals into the alienating narrative. The school nurse's log is the most accurate documentary witness.
Author: Alan Markson · Last reviewed: 2026-05-15 · License: CC BY 4.0 Originally published at antialienate.com/blog/munchausen-by-proxy.
The clinical codes¶
| Code | Title |
|---|---|
| DSM-5 V300.19 | Factitious Disorder Imposed on Another (formerly Munchausen by Proxy) |
| WHO ICD-11 6D52 | Caregiver-Fabricated Illness in a Child |
| DSM-5 V995.51 | Child Psychological Abuse (broader frame) |
The pattern in PA cases¶
- Illness "appears" within 24-48 hours of upcoming exchanges
- Multiple specialists consulted (doctor-shopping)
- Symptoms reported by parent but not observed by outside clinicians
- Child eats normally, plays normally, has normal energy at school
- "Sick" status disappears when there's no contact to cancel
The forensic framework (Roesler & Jenny, 2009)¶
Roesler & Jenny established the Medical Child Abuse framework now used in pediatric forensic assessment:
- Symptoms — fabricated, exaggerated, or induced
- Medical care — sought beyond what the child's actual condition requires
- Harm — physical, psychological, or relational
When all 3 are present, the case meets the diagnostic threshold and triggers child-protection involvement under most jurisdictions' mandatory-reporting frameworks.
Documentation moves¶
- Subpoena school nursing logs — contemporaneous, time-stamped, unseen by the alienator
- Subpoena pediatric records — pattern of "no acute findings" + parental claims of illness
- Build correlation chart — illness incidents vs. upcoming exchange dates
- Request HIPAA records — complete treatment records, not summaries
- Pediatric forensic evaluator — expert who can interpret the pattern
Why this often goes unnamed¶
Most pediatricians receive zero training on FDIA. The DSM-5 codes exist; the training does not. The result: see a child who is well, accept the parent's account of illness, write neither finding into a way the family court can later use.
Source-blog hyperlinks¶
| Live URL | Title |
|---|---|
| antialienate.com/blog/munchausen-by-proxy | Munchausen by Proxy / FDIA |
Related entries¶
- posts/12-medical-child-abuse.md — paired clinical post
- posts/64-weaponizing-illness.md — fictional vignette of the pattern
- posts/04-the-17-strategies.md
Citations¶
- DSM-5 V300.19 — Factitious Disorder Imposed on Another
- WHO ICD-11 6D52 — Caregiver-Fabricated Illness in a Child
- Roesler, T. A., & Jenny, C. (2009). Medical Child Abuse: Beyond Munchausen Syndrome by Proxy. American Academy of Pediatrics.
- Sanders, M. J., & Bursch, B. (2002). Child Maltreatment, 7(2), 112–124.
Disclaimer¶
Educational content. Not clinical or legal advice.
CC BY 4.0 · antialienate.com · Alan Markson