Once you suffer from tenosynovitis during menstruation, first of all, you must reduce the movement of the affected finger, avoid flexion and extension as much as possible, and at the same time, microwave physiotherapy, can be used externally to activate blood circulation and eliminate blood stasis medication, non-steroidal anti-inflammatory drug treatment. Due to the special characteristics of the menstruation period, it is not possible to use oral medication, intravenous infusion, otherwise it will have a more serious impact on the newborn, so, external drugs and physical therapy. If the effect of the above treatments is not satisfactory, surgery can also be considered. Under local anesthesia, tendon sheath incision is performed to completely remove the tendon sheath at the lesion to achieve the purpose of curing, but it is recommended to stop breastfeeding for a day or so.