Ringworm is a common skin infection caused by a type of FUNGUS. The medical term for this condition is TINEA, and the fungi responsible are known as dermatophytes. Ringworm is characterized by a red, circular rash with raised edges. It is highly contagious and can be spread through contact with an infected person or animal, or through contact with contaminated objects. Treatment typically involves antifungal medications, such as those derived from fungi, to help clear up the infection.