Abstract
Infection with T.tonsurans often occurs among judo participants in Japan. As a result, guidelines for mass screening using a hairbrush test have been formulated for detecting and treating asymptomatic patients infected with ringworm of the scalp. However, we often experience cases for which we are unable to make a diagnosis in accordance with the guidelines. Thus, difficulties can occur when formulating treatment policy and giving lifestyle guidance, especially when the hairbrush test results and clinical findings are not in accordance with each other. Herein, we report 3 junior and senior-high school students with T.tonsurans infection who belonged to judo clubs in Ishikawa Prefecture, Their diagnosis was difficult to make, as the hairbrush test results and clinical courses did not match the guidelines. A hairbrush test is useful for mass screening to detect T.tonsurans infections. However, since persistent and intractable cases are often encountered, it is proposed that the treatment policy should be formed not only from the results of a single hairbrush test, but also based on the following clinical course.
