Mental disorders are classified as a psychological condition marked primarily by sufficient disorganization of personality, mind, and emotions to seriously impair the normal psychological and often social functioning of the individual. Individuals diagnosed with mental disorders are typically deemed unable to function in society. Mental disorders occasionally consist of a combination of affective, behavioral, cognitive and perceptual components. The acknowledgement and understanding of mental health conditions has changed over time and across cultures, and there are still variations in the definition, classification, and treatment of mental disorders.