Unusual emotional high or irritability that lasts for a period of time: 1. Increased or exaggerated self-confidence. 2. High energy level. 3. A decrease in the need for sleep. (For example, feeling well rested on 3 hours of sleep.) 4. More talkative than usual, or eager to talk. 5.Feeling of quick thinking and a flood of ideas. 6.Lack of concentration. (Attention is particularly easily disturbed by external matters) 7.Increased activity. (Can be expressed as more social activities, more active at work/school, more sexual behavior) 8. More like to do some risky recreational activities.