Brad sometimes will stay awake for two days at a time, gambling away all his money and feeling as if nobody can defeat him. After one of these periods, he feels so sad and lost that he can’t get out of bed for three or four days. A psychiatrist would MOST likely classify this case as what type of disorder?

Brad’s periods of unusually high energy, little need for sleep, risky gambling, and feeling invincible are manic symptoms. His episodes of deep sadness and inability to get out of bed are depressive symptoms. Because these are major shifts in mood, a psychiatrist would classify the case as a mood disorder; neurodevelopmental, factitious, and somatoform disorders do not describe this pattern.

AI-written and checked against the verified answer.