April 19,1775 The Battle of Lexington and Concord, which occurred on April 19, 1775, is when the American Revolutionary War began.
mental illness. noun mental illÂ·ness. Legal Definition of mental illness. 1 : mental disease. 2 : a mental condition marked primarily by sufficient disorganization of personality, mind, and emotions to seriously impair the normal psychological and often social functioning of the individual âcalled also mental disorder.
A personality disorder is a type of mental disorder in which you have a rigid and unhealthy pattern of thinking, functioning and behaving. A person with a personality disorder has trouble perceiving and relating to situations and to people.