To be diagnosed, the patient must have had 5 or more of the following 9 symptoms (including at least 1 of the first 2 * symptoms) during the past two or more weeks:

• depressed mood (sad, "blue")*
• loss of interest or pleasure (anhedonia) *
• change in sleep
• change in appetite or weight
• low energy or fatigue
• psychomotor agitation or slowing
• low self-esteem or guilt
• poor concentration
• thoughts of suicide or death