The disorders in this category include those where the primary symptom is a disturbance in mood. In other words, inappropriate, exaggerated, or limited range of feelings. Everybody gets down sometimes, and everybody experiences a sense of excitement and emotional pleasure. To be diagnosed with a mood disorder, your feelings must be to the extreme. In other words, crying, and/or feeling depressed, suicidal frequently. Or, the opposite extreme, having excessive energy where sleep is not needed for days at a time and during this time the decision making process in significantly hindered.