Following the reintroduction of clozapine, several atypical antipsychotics have become available for the treatment of schizophrenia. These drugs are at least as effective as conventional treatment. Although each has an individual pattern of affinities, new work suggests that the hallmark of atypicality is fast dissociation at the dopamine-2 receptor. Numerous novel drugs are in development, but it is not clear how these conform to this theory of therapeutic effect. Atypical antipsychotics cause less extrapyramidal side effects than conventional treatment, but other effects such as hyperprolactinaemia, weight gain, glucose dysregulation and prolonged QTc interval remain problematic for some. Current antipsychotic prescribing practice is far from ideal: the NICE guidance stresses that atypical treatments should be considered unless symptoms are well controlled and side effects are acceptable, or depot formulation is indicated. There is a welcome emphasis on drug treatment as part of an integrated package of care negotiated with patients and their carers.
