The most common disease of nails is fungal nail infection. However most of the nail abnormalities are caused due to fungus. Normally fungi are present in the body but it leads to infection when they overgrow. Here we will discuss the causes symptoms and treatment for fungal nail infections. A common fungal infection Onychomycosis is also known as tinea unguium that leads to brittle thickened or crumbly nails in either the toenails or fingernails. According to the American Academy of Dermatology the fungal nail infection occur when your hands and toes are compact in a moist and warm environment. It