Differential consideration
Delusional disorder, persecutory type
F22Psychotic Disorders
Why consider it
fixed false beliefs at full delusional intensity
Criteria and features to review
- A. ≥1 month of ≥1 delusion(s)
- B. Schizophrenia Criterion A never met; hallucinations not prominent or related to delusional theme
- C. Functioning not markedly impaired; behaviour not obviously odd apart from delusion
- D. No manic/major depressive episode; or mood episodes brief relative to delusion duration
Questions to clarify
- Which documented criteria and exclusions are met for each possibility?
- What timeline, course, and functional change best distinguishes the alternatives?
- Are substance, medication, medical, developmental, and contextual explanations adequately assessed?