RESUMO
Pruritus of external auditory canal is often treated with blood-enriching formulation and heat-clearing formula. Here, we report a case of intractable pruritus of external auditory canal successfully treated with tokishigyakukagoshuyushokyoto, which did not improve with blood-enriching formulation or heat-clearing formula. Our patient was a 52-year-old woman. She had itching in her left ear from the age of 45, and was treated by 5 otolaryngologists, but her symptom did not improve. I treated her with tokiinshi, shofusan, yokukansankachimpihange, unseiin, jumihaidokuto and keishibukuryogankayokuinin, but they had no effect. After reconsideration of sho, she was diagnosed as interior cold pattern, and she had tenderness in groin area. So I treated her with tokishigyakukagoshuyushokyoto, and her itching disappeared. We should consider interior cold pattern as one of the differential diagnoses of pruritus of external auditory canal.