Personality disorders are a form of mental disorder. They are characterised by a long-term pattern of serious behavioural differences that significantly affect the functioning of the individual in personal and social situations.
Some types of personality disorder that have been defined are:
... Prime Minister (1960-1972)
February 20 - Alexei Kosygin[?], Premier of the Soviet Union[?] (+ 1980)
February 25 - Adelle Davis[?], nutritionist, writer (+ 1974)
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