Efficacy of antipsychotics in delusional infestation.

Background: Data remain scarce for the first-line antipsychotic choice in treating delusional infestation (DI).

Objectives: We evaluated the treatment responses associated with different antipsychotics in DI patients.

Methods: We undertook a multicentre, retrospective observational study using anonymised electronic patient records from two hospitals in the United Kingdom from 1 January 2011 to 1 January 2023.