The symptoms of irregular menstruation during puberty mainly include irregular cycle, heavy or light menstrual flow or variable duration of menstruation. 1. Irregular cycle: Irregular menstruation during puberty mainly manifests as irregular cycle, which may occur once in several months or twice in a month. 2. Abnormal menstrual flow: some of them have excessive menstrual flow, or even heavy bleeding, which cannot be stopped by themselves, often resulting in anemia or shock. In some cases, the menstrual flow is small, even only a few drops. 3. Abnormal menstrual period: the duration of menstrual period varies in adolescent women, which may range from a few days to ten days. Most of the irregular menstruation during puberty does not need special treatment, and it is recommended to relax and avoid anxiety. If the symptoms are more obvious, such as large amount of bleeding, causing dizziness, general weakness, etc., this situation should be timely to the hospital to avoid affecting the health of the body.