Subjective data
Depressed individuals may have feelings of sadness or irritability, an inability to experience pleasure or have fun, decreased energy, sleep problems (this may include sleeplessness, increased sleep, interruption in normal sleeping patterns), appetite changes (lack of appetite or an increase in appetite), low self-esteem (negative feelings about one's own appearance, intelligence, and personality), feelings of hopelessness and helplessness, social isolation, and suicidal ideas or attempts. These problems may interfere with social relationships and functioning at school or work. Some people who are depressed also may be anxious and worry a lot, and even may experience panic attacks. Alcohol or drug abuse may occur.