A wide range of conditions that affect mood, thinking, and behavior.

Characterized by persistently depressed mood or loss of interest in activities causing impairment in daily life.

Causes unusual shifts in mood, ranging from extreme highs (mania or “manic” episodes) to lows (depression or “depressive” episode.)

Involves persistent and excessive worry that interferes with daily activities. May be accompanied by restlessness, feeling on edge or easily fatigued, difficulty concentrating, muscle tension or problems sleeping.

A disorder that develops when a person has experienced or witnessed a scary, shocking, terrifying, or dangerous event and has difficulty recovering from that event.

Can involve delusions (false beliefs), hallucinations (seeing or hearing things that don't exist), unusual physical behavior, and disorganized thinking and speech. It is common to have paranoid thoughts or hear voices.