The symptoms of weakness in the arms and legs during menstruation are caused by menstrual syndrome due to changes in estrogen and progesterone in women’s bodies during menstruation. Patients usually experience dizziness, weakness in the hands and feet, irritability, and insomnia. It may also be due to the fact that women lose a lot of blood during menstruation, resulting in weakness of qi and blood so they may experience weakness in the hands and feet. Weakness in the hands and feet during menstruation may also be caused by a woman’s low immune system, cold or flu, as well as fever, stuffy nose and runny nose. If a woman has weakness in her hands and feet during menstruation, it is recommended that she seek medical advice before taking treatment, and that she eat more food to replenish her Qi and blood during menstruation, and pay attention to keeping warm to avoid getting cold.