Sleep apnea/hypopnea[115][116] Secondary symptoms of autistic spectrum conditions and other pervasive developmental disorders[117][118] Antipsychotic-induced akathisia.[119][120] Drug withdrawal, dependence and detoxification[121] Negative, depressive and cognitive symptoms of schizophrenia (as an adjunct)[122][123] A case report has been published in which mirtazapine reduced visual hallucinations in a patient with Parkinson's disease psychosis (PDP).[124] This is in alignment with recent findings that inverse agonists at the 5-HT2A receptors are efficacious in attenuating the symptoms of Parkinson's disease psychosis.