Hwabyung meaning anger(fire) disease is an culture-related anger syndrome in Korea. According to the patients' explanation, reactive anger, resulting from being a victim of an unfair social situation, have to be suppressed so as not to jeopardize harmonious family or social relationships. However, if the unfair situations continue or repeat themselves, the suppressed anger "accumulates, becomes dense", and finally causes a disease, hwabyung. The symptoms are subjective anger and feeling unfair with anger-related bodily and behavioral symptoms including heat sensation, pushing-up, respiratory stuffiness, a mass in epigastrium, much talking, sighing, and going-out. Symptoms seem to symbolize the nature of fire(anger) and its partial suppression and/or partial releasing. Diagnostically hwabyung shares some symptoms of depression or anxiety but it was found to be different from depressive disorders or anxiety states by manifesting unique symptoms of subjective anger and anger-related somatic/behavioral symptoms. Based on research on this anger syndrome and other research on anger and anger-related psychiatric syndrome, author suggests a new conceptualization of "anger disorder".