Trichophyton tonsurans
The number of detection of this species among the dermatophytes has markedly increased in recent years.
Trichophyton tonsurans is said to be a the primary cause of tinea capitis, also known as ringworm of the hair, in North and South America and Europe. Fighters of martial arts, such as judo, are often susceptible to dermatomycoses, such as athlete’s foot or ringworm, through physical contact. In Japan, mass infection by this fungus in a judo team was reported in around 2001. This is a relatively new infectious disease.