Problem: You are seeing a 15 years old male patient for feelings of hopelessness, crying spells for most days and feeling down. He has been feeling this way for about 1 month after his parents divorced. He has been unable to attend school and will now have to repeat the current grade next year. To adequately decide if it is better to start brief therapy or medications, the correct differential diagnosis to rule out would be: A. Adjustment Disorder B. Bipolar I C. Dysthymia D. Cyclothymia. Need Assignment Help?