It also refers to having negative or pessimistic thoughts. In addition, the symptoms of a clinical depression can make it difficult for you to function normally. A clinical depression lasts for several weeks or more. The exact cause of depression is not known. In more serious cases genetic inheritance appears to be involved.
Depressed people have difficulty in maintaining normal relationships with other people.
As a result, problems with relating to others develop or worsen. To diagnose depression, your doctor reviews your symptoms with you and with someone close to you. A physical exam may also be part of the evaluation. In addition to checking your overall physical condition, the doctor will try to determine whether alcohol abuse, hypothyroidism, some cancers, anemia, or an infection such as hepatitis or mononucleosis may be contributing to your depression. It is unwise to try to overcome depression by yourself.