<prompt> Two months after knowing that his son was suffering from leukemia, a 45 year old father presents with sleep deprivation, lethargy, headache and low mood. He interacts reasonably well with others, but he absented himself from work. The most probable diagnosis is :DepressionPsychogenic headacheAdjustment disorderSomatization disorder  <response>: The information in this question is :Stressor knowledge about medical disorder in a child.Mild depressive symptoms low mood, sleep deprivation but normal social interaction Symptoms within 3 months of stressor.The diagnosis is adjustment disorder. 