This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'Which of the following is TRUE about manic-depressive psychosis? \nSelect and explain. \nA. Cyclothymic disorder consists of mania and less severe episodes of depression, B. Psychosocial stressors have no influence on manic episodes, C. Hypehyroidism causes rapid-cycling bipolar disorder in females, D. Mood disorders often have seasonal patterns', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mood disorders often have seasonal patterns. Acute episodes of depression are common in spring and fall, whereas mania appears to cluster in the summer months. Suicide rates also show a peak in the spring and a (smaller) peak in the late fall. Higher rates of hypothyroidism, greater use of antidepressant medication, and changes in reproductive status and gonadal steroids may account for the greater prevalence of rapid-cycling bipolar disorder among women. Cyclothymic disorder consists of hypomania and less severe episodes of depression. Manic episodes typically begin suddenly, with a rapid escalation of symptoms over a few days, often, they are triggered by psychosocial stressors. Ref: Loosen P.T., Shelton R.C. (2008). Chapter 18. Mood Disorders. In M.H. Ebe, P.T. Loosen, B. Nurcombe, J.F. Leckman (Eds), CURRENT Diagnosis & Treatment: Psychiatry, 2e.', 'role': 'assistant'}]