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Depression is more than simply feeling unhappy or fed up for a few days.
Our Health A-Z contains more information on Depression.
Post-traumatic stress disorder (PTSD) is an [anxiety](yourmd:/condition/anxiety/introduction) disorder caused by very stressful, frightening or distressing events.
Our Health A-Z contains more information on PTSD.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.