Points: Feishu (BL 13) and Dingchuan (Ex-B1)
Technique: The patient is in a sitting position. After routine ster- ilization, the catgut thread is embedded beneath the skin, 2 to 4 cm long, and fixed with a piece of gauze. The points on the bilateral sides are selected alternately. The method is applied once every two weeks, and three to four treatments make up a course.