The infectious agents are Trichophyton rubrum , T. mentagrophytes var. interdigitale, Epidermophyton floccosum . It is spread by direct contact with skin or nail lesions of infected persons, or indirectly through contact with contaminated floors or showers. Toe and finger nails infected with T. rubrum are resistant to topical treatment. Examination of hair with a Wood's lamp. The fungus persists on contaminated materials as long as lesions or animal hair harbour viable spores.
All ages are susceptible to infections particularly caused by Trichophyton spp.
It is aggravated by friction and excessive perspiration in axillary and inguinal regions, and when environmental temperatures and humidity are high. Repeated attacks are frequent. Reinfec tion is frequent. It can be treated effectively with topical medications. Topical antifungal medication may be used concurrently.