Depression Only:
• Depressed mood
• Loss of interest
• Loss of appetite
• Low self-esteem
• Feelings of suicide
Depression and GAD:
• Agitation
• Dysphoria
• Sleep issues
• Fatigue
• Lack of concentration
• Restlessness
• Irritability
• Worry
• Anxiety
• Tension
Major depression occurs when at least five of these symptoms are present for a two week period.
-Source⁴: Roy-Byrne PP, Katon W. J Clin Psychiatry. 1997; 58(suppl 3): 34-38; discussion 39-40.