[Eosinophilic cystitis caused by Seijo-bohhu-tou: a case report].

: A 19-year-old woman was admitted to our hospital with a complaint of residual feeling, frequency and pain on urination. Laboratory analysis revealed an elevated eosinophilia count in peripheral blood and white blood cell count in urine. Lymphocyte stimulation test of Chinese herb named "Seijoh-bohhuh-toh" showed a positive reaction. Bladder symptoms were improved after ceasing this Chinese herb. From these points, we considered that the Chinese herb might have caused eosinophilic cystitis. We report this rare case with a review of the literature.