What's the Best Treatment for Fungal Nail Infection? Fungal infections can affect almost any part of the body. Fungi usually are present everywhere on the body alongside various bacteria. But when a fungus begins to overgrow and is not kept in check, you become susceptible to infections. For instance, Onychomycosis is also known as tinea unguium and is a fungal infection that affects fingernails or toenails. Fungal infections generally develop over time. Hence the slight changes that slowly occur in your nail looks or feels may be too subtle to notice at first. As soon as one notices, they should immediately opt for a fingernail fungus treatment before it's too late. Why do fungal infections develop? A fungal nail infection transpires from the overgrowing of fungi. The overgrowth may occur in, under, or on the nail. Fungi are known to thrive in warm, moist environments. The pins generally provide this exact environment, and hence it naturally helps them grow and overpopulate. ...