Cacoethes

Mania is a state of abnormally elevated or irritable mood, arousal, and/or energy levels. In a sense, it is the opposite of depression. Mania is a criterion for certain psychiatric diagnoses. The word derives from the Greek "μανία" (mania), "madness, frenzy" and that from the verb "μαίνομαι" (mainomai), "to be mad, to rage, to be furious".