Iatrogenic delusional parasitosis: a case of physician-patient folie a deux

Gen Hosp Psychiatry. 2010 Mar-Apr;32(2):210-2. doi: 10.1016/j.genhosppsych.2009.09.013. Epub 2009 Oct 29.


This report presents a patient incorrectly diagnosed first with parasitic infestation and then with primary delusional parasitosis (DP). Neither diagnosis was correct. As she traveled from doctor to doctor, however, the primary DP label gained credibility via repetition, with her ongoing symptoms seen as proof of its truth.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Attitude of Health Personnel*
  • Attitude to Health
  • Delusions / diagnosis
  • Delusions / epidemiology*
  • Delusions / psychology*
  • Diagnosis, Differential
  • Diagnostic Errors*
  • Female
  • Humans
  • Iatrogenic Disease / epidemiology*
  • Parasitic Diseases / psychology*
  • Physician-Patient Relations*
  • Shared Paranoid Disorder / diagnosis
  • Shared Paranoid Disorder / psychology*