Tenosynovitis does not only not get better during menstruation, but may also worsen. Because the baby must be taken care of during menstruation, a relative increase in daily behavioral activities as well as movement of the affected area can lead to aggravation of tenosynovitis, rather than a gradual healing of tenosynovitis. Therefore, when sitting on the moon, it is important to avoid movement of the affected area, and since it cannot be treated with oral medication, it can be treated with microwave physiotherapy and topical non-steroidal anti-inflammatory drugs. If the tenosynovitis is very serious and seriously affects the daily life, surgery can be considered, and the surgical treatment of tenosynovitis can be performed under local infiltration anesthesia.