Read the following case study. Then, in your response, indicate the most appropriate diagnosis. Provide a thorough justification

Read the following case study. Then, in your response, indicate the most appropriate diagnosis. Provide a thorough justification for your diagnosis. A woman brings her 32-year-old husband to a psychiatrist for “unusual behavior.” She says that, for the past five days, he has been cleaning the house extensively, often late into the night. He wakes up 2 hours earlier than usual the next morning but does not appear tired. He says he feels “very happy and productive – the best I have ever been!” His wife denies any dangerous behaviors at home and reports that he is able to continue working at his current job, albeit more productively than before. She recalls that, six months ago, he seemed very depressed, with loss of interest, poor sleep, low energy, and impaired concentration that lasted one month. The patient has not been hospitalized previously. On interview, he is pleasant and cooperative. His speech is pressured but redirectable. He denies any hallucinations. His urine toxicology screen is negative.