Feeling toothache when menstruating, there are two main reasons: First, the secretion of estrogen begins to increase during puberty, the body hormone imbalance, before menstruation, if the teeth are stimulated by hot and cold, such as often drink cold drinks and eat too hot food, it is easy to cause congestion, swelling, pain in the gum area, serious may also have bleeding symptoms, this condition usually lasts a short time, in a transient episode; Second, the secretion of menstruation Estrogen will stimulate to the gums, periodontal, causing local vasodilation, if originally have periodontitis and other diseases, the pelvic cavity is easily congested during menstruation, the endometrium sheds more, the blood volume increases, which will cause inflammatory episodes through nerve reflexes. If you often eat too hard or spicy or hot food, it will easily cause inflammation attacks and tooth pain. You should avoid cold and spicy diet during menstruation, and you can take vitamin B to relieve severe pain under the guidance of a doctor.