chapter  7
17 Pages

Treatment for Major Depression

Major depressive disorder is defined by the diagnostic criteria of DSM-IV. It is a very prevalent and dangerous disorder. Although it may develop at any age, it usually begins in the mid-20s to mid-30s. While some people have only a single episode and return to their approximate level of previous functioning, more than half of those who suffer one major depressive episode will develop another. DSMIV notes that of those who have two episodes, 70% will have a third, and of those who have three episodes, 90% will have a fourth. This means that the majority of those patients who have a major depressive disorder will qualify for the diagnosis of a recurrent major depressive disorder, either by history or by future course.