A Case of Unusual Hyperalgesia with Coldness in The Right Big Toe Successfully Treated with a Kampo Formulation Ninjin’yoeito
- VernacularTitle:他覚的な冷えを伴った母趾の異常な痛覚過敏に人参養栄湯が奏効した1例
- Author:
Katsutoshi TERASAWA
1
;
Toru KOBAYASHI
2
;
Makoto SUMIKOSHI
3
;
Yoshiro HIRASAKI
4
;
Yoko OTA
1
;
Atsushi CHINO
1
Author Information
- Keywords: ninjin’yoeito; hyperalgesia; qi deficiency; blood deficiency; qi uprising
- From:Kampo Medicine 2025;76(2):96-100
- CountryJapan
- Language:Japanese
- Abstract: We herein report a case of a 72-year-old man who complained of recurrent hyperalgesia in the right big toe, which was successfully treated with the Kampo formulation ninjin’yoeito. The unusual pain felt like being cut with a utility knife whenever his skin was lightly scraped with a toothpick. There was mild tactile loss at this area, however, there were no other sensory disturbances in the sense of pain, cold, or vibration. This patient’s hobby was Iaido, a type of Kendo, which places stress on the soles of the feet. Therefore, we speculated that the clinical disorder in this case was related to his exercise. This patient exhibited a pattern of qi and blood deficiency with qi uprising, which suggested the use of ninjin’yoeito. After taking this Kampo formulation, his abnormal hyperalgesia with coldness in the big toe resolved. There have been no prior reports of ninjin’yoeito effectively treating unusual hyperalgesia.
