When thinking about depression, it is important to differentiate it from short-term sadness or feelings of unhappiness. Depression is a long-term condition and is considered a disorder when sad feelings keep affected individuals from performing activities because they have lost interest in them or feel overwhelmed with sadness. Typical symptoms of depression can include body aches and pains, lethargy, feeling hopeless, chronic fatigue, and contemplating self-harm. If any of these symptoms persist over an extended period (even for a few weeks), it is important to talk to a doctor. They may provide a referral to a psychiatrist who can assess the patient more thoroughly and possibly prescribe medication to alleviate symptoms.