Depression is a medical illness that involves the mind and body. Also called major depression, major depressive disorder and clinical depression, it affects how you feel, think and behave. Depression can lead to a variety of emotional and physical problems. You may have trouble doing normal day-to-day activities, and depression may make you feel as if life isn’t worth living.
More than just a bout of the blues, depression isn’t a weakness, nor is it something that you can simply “snap out” of. Depression is a chronic illness that usually requires long-term treatment, like diabetes or high blood pressure. But don’t get discouraged. Most people with depression feel better with medication, psychological counseling or other treatment.

Depression symptoms include:

• Feelings of sadness or unhappiness
• Irritability or frustration, even over small matters
• Loss of interest or pleasure in normal activities
• Reduced sex drive
• Insomnia or excessive sleeping
• Changes in appetite, depression often causes decreased appetite and weight loss, but in some people it causes increased cravings for food and weight gain
• Agitation or restlessness, for example, pacing, hand-wringing or an inability to sit still
• Slowed thinking, speaking or body movements
• Indecisiveness, distractibility and decreased concentration
• Fatigue, tiredness and loss of energy, even small tasks may seem to require a lot of effort
• Feelings of worthlessness or guilt, fixating on past failures or blaming yourself when things aren’t going right
• Trouble thinking, concentrating, making decisions and remembering things
• Frequent thoughts of death, dying or suicide
• Crying spells for no apparent reason
• Unexplained physical problems, such as back pain or headaches

For some people, depression symptoms are so severe that it’s obvious something isn’t right. Others people feel generally miserable or unhappy without really knowing why.
Depression affects each person in different ways, so depression symptoms vary from person to person. Inherited traits, age, gender and cultural background all play a role in how depression may affect you.
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