Answer:
Manic episode
Explanation:
Manic episode is part of a condition called bipolar disorder.
This episode is characterized by elevated mood, inflated self-esteem, decreased need for sleep, extreme cognitive productivity and excessive involvement in pleasurable activities.
The maniac phase last for about couple of days, usually less than a week. It is followed by a depressive episode where the affected person feels abandoned, lost, full of doubts and without the will to do anything at all.