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

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BriM19
The correct answer is Bipolar Disorder.

Bipolar Disorder is was known before as Manic Depression. Bipolar Disorder is a psychological issue that causes times of sorrow and times of anomalous lifted disposition. The modified state of mind is huge and is known as lunacy or hypomania, contingent upon its seriousness, or whether side effects of psychosis are available.
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