title: Clozapine treatment after agranulocytosis induced by classic neuroleptics.
abstract: Despite its potentially fatal side effect--agranulocytosis--clozapine has become an important drug in antipsychotic treatment. With this in mind, this report presents the case of a 23-year-old schizophrenic who had suffered from agranulocytosis after simultaneous short-term treatment with butyrophenone and phenothiazine neuroleptics 3 years ago. After nonresponse to two other classic neuroleptics, the administration of high-dose clozapine led to a full recovery without the recurrence of hematologic disorders during 24 months of follow-up examinations. Although patients with a known history of agranulocytosis are usually excluded from treatment with clozapine, we propose that, in very severe or otherwise therapy-resistant cases, clozapine be administered and then white blood cell counts monitored very stringently. Although a single case can prove little, our case provides further evidence for the presumption that noncross-reactivity exists between clozapine and other neuroleptic drugs in the induction of agranulocytosis.
authors.affiliation: Psychiatrische Klinik und Poliklinik, Freien Universität Berlin, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Bauer
authors.forename: A
authors.initials: A
authors.lastname: Mackert
mesh_terms: D000328:Adult; D000380:Agranulocytosis / Q000097:blood / Q000139:chemically induced*; D014150:Antipsychotic Agents / Q000009:adverse effects* / Q000627:therapeutic use; D003024:Clozapine / Q000009:adverse effects / Q000627:therapeutic use*; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D007958:Leukocyte Count / Q000187:drug effects; D012559:Schizophrenia / Q000097:blood / Q000188:drug therapy*; D012565:Schizophrenic Psychology
chemical_list: D014150:Antipsychotic Agents; D003024:Clozapine