Skip to content

Skin Problems & Treatments Health Center

Image Collection:

Adult Skin Problems

Photo of toenail with fungal infection

Fungal Nail Infection

back button next button

Copyright © ISM / Phototake -- All rights reserved.

A fungal nail infection occurs when a fungus attacks a fingernail, a toenail, or the skin under the nail, called the nail bed. Fungi (plural of fungus) can attack your nails through small cuts in the skin around your nail or through the opening between your nail and nail bed.

If you are healthy, a fungal nail infection probably won't cause serious problems. But it may look bad, hurt, or damage your nail or nail bed.

A fungal nail infection could lead to more serious problems if you have diabetes or a weak immune system. Talk to your doctor about the best way to treat a nail infection if you have one of these problems. Read more about the causes, symtoms, and treatments for fungal nail infections.

Reviewed on September 15, 2009

Today on WebMD

Pictures and symptoms of the red, scaly rash.
woman with dyed dark hair
What it says about your health.
woman with cleaning products
Top causes of the itch that rashes.
atopic dermatitus
Identify and treat common skin problems.
itchy skin
shingles rash on skin
woman with skin tag
Woman washing face
woman washing her hair in sink
close up of womans bare neck
woman with face cream