Diseases

Nail Fungus

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Nail fungus is a common condition that begins as a white or yellow spot under the tip of your fingernail or toenail. As the fungal infection goes deeper, nail fungus may cause your nail to discolor, thicken and crumble at the edge. It can affect several nails.

SYMPTOMS

Thickened
Whitish to yellow-brown discoloration
Brittle, crumbly or ragged
Distorted in shape
A dark color, caused by debris building up under your nail
Smellling slightly foul

CAUSES

Fungal nail infection can develop in people at any age, but it's more common in older adults. As the nail ages, it can become brittle and dry. The resulting cracks in the nails allow fungi to enter. Other factors — such as reduced blood circulation to the feet and a weakened immune system — also may play a role.