In a factor-analytical study of depression across two cultures, African and European, certain similarities and important differences were found. Depression in African cultures presented principally as depressed mood, somatic symptoms and motor retardation. In European cultures depression presented with depressed mood, guilt, suicidal ideas, motor retardation or anxiety. Both groups lost interest in work and the environment.
Guilt and suicidal ideas and acts are uncommon in African sample, and appear to be culturally determined.