Progressive supranuclear palsy misdiagnosed as schizophrenia.

A 72-year-old woman, who had previously been diagnosed as schizophrenic, experienced a year of deterioration in her ability to care for herself. She was variously diagnosed as having parkinsonism, catatonic schizophrenia, atypical psychosis, depression, and dementia before she was appropriately diagnosed as having progressive supranuclear palsy.