Which skin condition can be classified as a fungal infection?

Ringworm is classified as a fungal infection because it is caused by a group of fungi known as dermatophytes. These fungi thrive on keratin, a protein found in the skin, hair, and nails, leading to the characteristic circular, red, itchy rashes commonly associated with ringworm. The condition is contagious and can be spread through direct contact with an infected person, animal, or contaminated surfaces.

In contrast, scabies is caused by a mite, psoriasis is an autoimmune condition that leads to rapid skin cell production and is not infectious, and dermatitis is an inflammatory response of the skin that can be triggered by a variety of factors but is not caused by a fungal infection. Understanding these distinctions helps clarify why ringworm is the correct choice as a fungal infection.