Guillermo was having a normal day when suddenly he felt an overwhelming expansion of his mood. He now feels euphoric, cheerful, optimistic, has boundless energy, and feels sociable and confident. However, he is also hyperactive, impulsive, demanding, and overbearing. His behavior is typical of a

manic episode

Explanation:

Manic episode is a medical condition often known as manic episode or manic syndrome, it is a situation in which the individual suffering from it, experiences abnormally elevated arousal, affect, and energy level.

However, manic episode is often conceived as a "mirror image" to depression or bipolar disorder, the inflated mood can be either euphoric or irritable;and while this icreases, irritability can be more obvious and leads to anxiety or violence.

Hence, Guillermo behavior is typical of manic episode.

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