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: A statistical analysis of the data thus obtained, showed that: back pain syndrome, as a symptom of depression, occurred in 14% of all patients referred to a neurologist, whereas in 37%--depressive disorders, not diagnosed before, were detected; in 88,2% they were of mild and moderate type.