A contagious affection of the skin due to the presence of a vegetable parasite, and forming ring-shaped discolored patches covered with vesicles or powdery scales. It occurs either on the body, the face, or the scalp. Different varieties are distinguished as Tinea circinata, Tinea tonsurans, etc., but all are caused by the same parasite (a species of Trichophyton).
An infection caused by a fungus (not a worm or a parasite). It is extremely contagious and spreads quickly. The most common symptoms are red, itchy, swollen skin in the shape of a ring. The skin in the center of the ring usually appears healthy.