Ringworm, also called tinea, is a skin infection caused by fungi, microscopic organisms that are similar to yeast and molds. It does not have any relation to worms, but is called "ringworm" because the infection can produce ring-shaped patches on the skin that have red, wormlike edges.
Although ringworm can affect almost any area of the body, it favors places that are warm, dark and moist, such as skin in the groin area, the spaces between the toes and the deep skin folds of obese people.
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