Mood Disorders is a mental disorders characterized by periods of depression, sometimes alternating with periods of elevated mood. People with mood disorders suffer from severe or prolonged mood states that disrupt daily functioning. Among the general mood disorder classified in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) are major depressive disorder, bipolar disorder, and dysthymia. (See Anxiety and Major Depressive Disorder). If you need any help or advice, call us now.