I'm seeking the name of a mental illness or hormone problem that appears in men and women once a month for about 10 days. The symptoms are: darker skin, redness of the eyes, a very bad disposition and a very difficult to control temper. Anger is always present (many times without any reason for the anger) along with a rapid shaking of the left leg. When the 10 days are over, the person apologizes for the anger and seems like another person, until the next month. This illness or hormone change appears in mother, sons, and grandsons.