RESUMEN
Shakuyakukanzoto is effective for pain primarily related to muscle contractions and the powder works rapidly after oral intake. We successfully treated a patient who presented with spastic convulsions by using shakuyakukanzoto. A 32-year-old man had injury to his left hand from a dog bite, resulting in tetanus. Intravenous propofol was chosen as a sedative at first. On day1, shakuyakukanzoto was also administered to control his spastic convulsions. It was effective in reducing his propofol dose and improving various symptoms such as priapism, abdominal pain, tremor, and insomnia. The patient was discharged from our hospital on day 14. This is the first report we know of tetanus treated with shakuyakukanzoto. And we believe that shakuyakukanzoto may be useful for the control of muscle spasms and the management of dysautonomia caused by generalized tetanus.