Fungal infections are one of the most common of human skin ailments. They are also some of the most variable skin problems such that they are frequently misdiagnosed by patients and health care workers alike. If a person has a rash or eruptions suggestive of being a fungus, a scraping of the skin may be done for microscopic examination to diagnosis the problem. Other techniques often used for diagnosis are skin cultures and, occasionally, a skin biopsy. Once the diagnosis is made, treatment of a fungal infection is often relatively simple.