Generally this does not cause any problem more serious than flaking or itching skin. However, it can be a source of significant infections in people with impaired blood flow to the feet, such as diabetics , or in people with impaired immune systems . Infections of the nails are more difficult to treat than those affecting only the skin. Keeping the feet dry is very important for preventing and fighting athlete's foot. After showering or bathing, drying or careful use of a hair dryer is recommended.
Light is also an anathema to fungi.
People with athlete's foot should change socks daily to decrease contact with the fungus or wear sandals occasionally to get sunlight exposure. Tea tree oil has been shown to help athlete's foot. The compound known as ajoene, found in garlic , is a powerful anti-fungal agent. All participants remained cured three months later. Ajoene cream is not yet available, but topical application of crushed, raw garlic is a potential alternative application.