Source:http://linkedlifedata.com/resource/umls/id/C0085159
MSH: A syndrome characterized by depressions that recur annually at the same time each year, usually during the winter months. Other symptoms include anxiety, irritability, decreased energy, increased appetite (carbohydrate cravings), increased duration of sleep, and weight gain. SAD (seasonal affective disorder) can be treated by daily exposure to bright artificial lights (PHOTOTHERAPY), during the season of recurrence.,CSP: specific disorder usually appearing in the second or third decade, characterized by symptoms of depression between late fall and early spring, sometimes followed by mania or hypomania; intense light is reportedly therapeutic.,MEDLINEPLUS: <p>Some people experience a serious mood change during the winter months, when there is less natural sunlight. This condition is called seasonal affective disorder, or SAD. SAD is a type of <a href='http://www.nlm.nih.gov/medlineplus/depression.html'>depression</a>. It usually lifts during spring and summer. </p><p>Not everyone with SAD has the same sym