Elevation of emotional tone or mood that significantly deviates from normative affective functioning. This state is characterized by an overwhelming and all-encompassing sense of joyous well-being; it is associated with unfounded grandiosity, or grossly inflated self-esteem, rapid speech, impulsivity, and an impaired capacity for self-regulation, irrespective of context. The phenotype is Euphoria (HP_0031844). Also known as: Euphoric mood, Extreme elation, Inappropriate elation.