Anxiety disorders, attention deficit hyperactivity disorder and depressive disorder are common psychological disorders. Schizophrenia and bipolar disorder are also common psychological disorders, according to the Substance Abuse and Mental Health Services Administration.
A psychological disorder is a pattern of psychological or behavioral symptoms that include a disturbance in a person's cognition or emotion regulation or a behavioral dysfunction, explains About.com. Uncontrollable excessive fear or anxiety that negatively impacts social functioning is an anxiety disorder. ADHD is a constant pattern of inattention and impulsivity, reports the Substance Abuse and Mental Health Services Administration.
Intense, dramatic mood swings and activity levels are characteristics of bipolar disorder. Depressive disorder is the most common psychological disorder in the United States and includes a sad, hopeless mood that interferes in daily life. Schizophrenia manifests in either delusions, hallucinations or other types of disorganized thinking, notes the Substance Abuse and Mental Health Services Administration.