Diseases, Conditions and Tests
The RxList disease and condition listing contains explanations of many medical conditions and tests. Disease articles are written by U.S. Board Certified Physicians. To use the listing, browse the terms by selecting a letter.
Depression is a complex mood disorder that can affect a persons thoughts, behaviors, and physical health. Some symptoms of depression are a sad or irritable mood and/or loss of interest in all or most activities that used to be pleasurable.
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