Ringworm is not, as its name suggests, caused by a worm, but a fungal infection that can affect your body, scalp, groin, or feet. Symptoms include itchy, red, scaly, raised patches that sometimes form in a ring-like shape. The infection is contagious and is passed through direct skin contact or contact with contaminated articles. Over the counter anti-fungal creams can be effective, but prescription oral medications or antibiotics are sometimes recommended.
References: www.google.com/health