Ringworm is a collective term for the symptoms associated with a fungal infection of the skin or skin appendages, such as hair and nails, which is essentially a fungal infection. The direct cause is infection with fungal hyphae or spores. Indirect causes include: firstly, decreased resistance; secondly, long-term exposure to fungi; thirdly, hot and humid surroundings; and fourthly, skin breakdown. There are also some such as tinea cruris, tinea versicolor and psoriasis which are not fungal infections, but are just misunderstandings due to habitual name calling. Among them, tinea versicolor is an eczema-like disease caused by over-cleansing, inappropriate moisturizing, and weak skin’s own resistance. Tinea versicolor is of unknown cause and may be a superficial inflammatory response of the face related to sun exposure. Psoriasis is related to immune mechanisms and is caused by genetic, environmental, and immune-related causes.