Definition: Any type of depression can make you feel sad and keep you from enjoying life. However, atypical depression — also called depression with atypical features — means that your depressed mood can brighten in response to positive events. Other key symptoms include increased appetite, sleeping too much, feeling that your arms or legs are heavy, and feeling rejected.
Symptoms: Depression that temporarily lifts in response to good news or positive events, Increased appetite that can cause weight gain, Increased desire to sleep, usually more than 10 hours a day, Heavy, leaden feeling in your arms or legs that lasts an hour or more in a day — a feeling that is different from fatigue, Sensitivity to rejection or criticism, which affects your relationships, social life or job.
Statistics: Of those with suicide symptoms, the findings were as expected with the atypical group being higher on suicide and lower on symptoms of internalizing disorders. In addition, the atypical group was similar or lower on substance problems, symptoms of externalizing disorders, and crime and violence.