After several weeks of feeling apathetic and dissatisfied with his life, Mark has suddenly become extremely cheerful and so talkative he can't be interrupted. He seems to need less sleep and becomes irritated when his friends tell him to slow down. Mark's behavior is indicative of

Question

Quizplus · Accepted Answer

The sudden change from feeling apathetic to being extremely cheerful and talkative, along with needing less sleep and becoming easily irritated, is indicative of bipolar disorder. This disorder is characterized by episodes of mania or hypomania, followed by periods of depression.

After Several Weeks of Feeling Apathetic and Dissatisfied with His