Delusion of pregnancy: a case revisited

Behav Neurol. 2013 Jan 1;27(3):293-4. doi: 10.3233/BEN-120324.


A patient with delusion of pregnancy as an early feature of frontotemporal dementia with motor neurone disease (FTD/MND) who was reported some years ago was posthumously found to harbor the C9ORF72 hexanucleotide repeat expansion, now known to be the most common genetic cause of FTD/MND. Some series have found psychosis to be common in FTD associated with this mutation, so this test should be considered in individuals with clinical features of FTD and MND and/or with a family history of either disorder who present with bizarre delusions.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Amyotrophic Lateral Sclerosis / genetics*
  • Amyotrophic Lateral Sclerosis / psychology
  • C9orf72 Protein
  • DNA Repeat Expansion / genetics
  • Delusions / genetics*
  • Female
  • Frontotemporal Dementia / genetics*
  • Frontotemporal Dementia / psychology
  • Genetic Predisposition to Disease / genetics
  • Genetic Testing
  • Humans
  • Pregnancy
  • Proteins / genetics*


  • C9orf72 Protein
  • C9orf72 protein, human
  • Proteins

Supplementary concepts

  • Frontotemporal Dementia With Motor Neuron Disease