《黄帝内经·灵枢·厥病》
头痛不能使用针刺方法治疗的是，严重的痹证造成的头痛，若是每天都发作，针刺之后可以暂时缓解症状，但是不能根治。
头痛不可刺者，大痹为恶，日作者，可令少愈，不可已。
Headache which is not treatable by acupuncture: a severe type of arthralgia causes headaches. If it occurs every day, acupuncture can temporarily relieve symptoms, however it cannot completely cure it.