The increasing frequency of mania and bipolar disorder: causes and potential negative impacts.

The frequency of mania has not changed during the last century even with the development of new diagnostic criteria sets. More specifically, from the mid-1970s to 2000, the rate of mania (variably labeled major affective disorder-bipolar disorder and bipolar I disorder) was consistently identified in US and international studies as ranging from 0.4% to 1.

Somatization Disorder in Elderly Patients.

Little is known about the prevalence, characteristics, or natural history of somatization disorder in elderly patients. The authors evaluated 353 adult women (from outpatient psychiatric and medical clinics) for somatization disorder. Twenty-four percent of patients were 55 years old or older.