An individual is said to be suffering from depression when he or she experiences hopelessness, helplessness, loss of interest in activities otherwise enjoyable, changes in sleep patterns, weight loss, loss of zing, self loathing, and problem in concentrating or making decisions. Such an individual tends to feel suicidal and needs to be provided immediate help. Men, women, teens and elders could get depressed due to disparate reasons.

Patients of depression often exhibit loss in interest in former pastimes, hobbies, sex and social activities. They may turn insomniacs or sleep too much, lose or gain too much weight, get easily agitated, fatigued and sluggish. They criticize themselves for past mistakes and faults, turn to escapist behavior, drug abuse and have trouble focusing on simple tasks. Possible treatment methods include medication, behavior therapy, meditation and exercising.