Tinea, commonly known as ringworm, is a fungal infection that affects the skin, hair, and nails. It is caused by various types of fungi called dermatophytes, which thrive in warm, moist environments. Tinea can appear as red, itchy patches with a ring-like appearance, and it can spread through direct contact with an infected person or contaminated surfaces. There are several types of tinea, including tinea corporis (body), tinea pedis (athlete's foot), and tinea capitis (scalp). Treatment typically involves antifungal medications, which can be applied topically or taken orally, depending on the severity and location of the infection.