Points: Xiongqiangqu and Yuntingqu

Technique: Use l.5 to 2 cun filiform needles to puncture the scalp areas bilaterally, applying the reducing manipulation achieved by rapid and slow insertion and withdrawal of the needle. Three sessions of treatment should be performed every week. When the treatment is done, the intra-dermal needles should be embedded on the Xiongqiangqu (thoracic cavity area) and Yuntingqu on both sides. If the above treatment is given successively for two or three months, the onset of attacks can be controlled.