Definition: Dermatophytosis a superficial fungal infection of the skin, hair, and nails caused by dermatophytes (parasitic fungi).
Other names: Tinea, Ringworm. Dermatophytosis in different parts of the body have different names:
Epidermophyton, Microsporum, and Trichophyton genera of dermatophyes are the most common causes of dermatophytosis. Humid or moist skin provides a very favorable environment for the establishment of fungal infection.
Itching is the most common symptom. The clinical appearance of the fungal infection varies depending on the type of dermatophye and the location of the invasion. Scaling (flaky skin), pustules (elevation of the skin containing pus) and erythema (redness) may be present. Patients with tinea capitis often have hair loss. 
Tinea infections may be treated with topical agents (ie, creams, lotions, solutions, powders, sprays) often containing antifungals or steroids as the drug of choice or with oral antifungals in extensive or recalcitrant disease. Use of oral medications requires laboratory blood work and a typical course is 3 months.,