What condition involves a fungal infection of the skin?

Tinea, commonly known as ringworm, is a condition characterized by a fungal infection of the skin. This infection is caused by dermatophytes, a group of fungi that thrive on keratin found in skin, hair, and nails. The term "ringworm" derives from the circular, ring-like appearance of the rash which often develops as a result of the infection. Tinea can manifest in various forms depending on the area of the body it affects, such as tinea pedis (athlete's foot) or tinea corporis (body ringworm).

Understanding this condition is crucial because it highlights the importance of recognizing fungal infections, which can often be mistaken for other skin disorders. In contrast to conditions like pityriasis, psoriasis, and dermatitis, which have varying causes such as non-infectious factors, inflammatory responses, or other skin irritations, tinea specifically points to a fungal etiology that requires appropriate antifungal treatments for resolution.