[Sequential trial on analgesic effect of vascular headache by toutong dibi ye]

Toutong Dibi Ye (TTDB) is administered into nose in order to relieve headache according to traditional Chinese medicine. Analgesic effect of vascular-headache by the TTDB and placebo were as follows: Effective rate of TTDB was up to 80%, significantly higher than that of placebo. The probability of conclusion error < or = 0.01.