Signs and symptoms
... You may have a nail fungal infection if one or more of your nails are: Thickened Brittle, crumbly or ragged Distorted in shape Flat or dull, having lost luster and shine Yellow, green, brown or black ...

Causes
... Fungi are microscopic organisms that don''t need sunlight to survive. Some fungi have beneficial uses, while others cause illness and infection. Nail fungal infections are typically caused by a fungus...

Risk factors
... Nail fungus is more common among older adults because nails grow more slowly and thicken with aging, making them more susceptible to infection. Nail fungus also tends to affect men more than women and...

When to seek medical advice
... Once a nail fungal infection begins, it can persist indefinitely if not treated. See your doctor at the first sign of nail fungus, which is often a tiny white or yellow spot under the tip of your

Screening and diagnosis
... The first step to beating nail fungus is getting a diagnosis. Your doctor will likely examine your nails first. To test for fungi, your doctor may scrape some debris from under your nail for analysis....