Psychological disorders, also referred to as mental disorders, are abnormalities of the mind that result in persistent behavior patterns that can seriously affect your day-to-day function and life. Many different psychological disorders have been identified and classified, including eating disorders, such as anorexia nervosa; mood disorders, such as depression; personality disorders, such as antisocial personality disorder; psychotic disorders, such as schizophrenia; sexual disorders, such as sexual dysfunction; and others. Multiple psychological disorders may exist in one person.