Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Dysthymia, also known as neurotic depression, is a mood disorder consisting of chronic depression, with less severe but longer lasting symptoms than major depressive disorder, persisting for at least 2 years. As dysthymia is a chronic disorder, sufferers may experience symptoms for many years before it is diagnosed, if diagnosis occurs at all. As a result, they may believe that depression is a part of their character, so they may not even discuss their symptoms with doctors, family members, or friends. Learn more about the dysthymia, its possible causes and effects in this book.