Parkinson's psychosis can be very challenging to manage, with limited treatment options available. There is a good evidence base to support the use of clozapine, but practical obstacles often prevent its use. There is a drive nationally to set up services so that people with Parkinson's psychosis can access treatment with clozapine in a timely manner and, where possible, with initiation in the community. The authors describe their experiences in setting up clozapine services specifically for this patient group in England and offer a practical approach to the assessment of Parkinson's psychosis. They also outline the evidence base in relation to treatment options and share their experiences of prescribing clozapine for Parkinson's psychosis.
