As simple an issue as yellow nails may seem, it can be tough for even experts to pinpoint the cause. "Every time somebody comes in with a nail change, I put on my super-sleuth hat," Dr. Kristen Lo ...

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Yellow nail syndrome (YNS) is a rare medical condition characterized by a distinct triad of symptoms: yellow or discolored nails, respiratory issues, and lymphedema (swelling due to fluid accumulation ...

Excessive nail polish use or fungal infections are the most likely causes of yellow toenails. However, yellow toenails can sometimes be a sign of a more serious underlying condition. Nails are ...

Support local journalism. A digital subscription is incredibly affordable and makes you the most informed person around. Click here and subscribe today. Gloria, 45, is a bartender who noticed she has ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Fingernails: You don’t likely think much about ‘em unless you're picking out a ...

Thick, yellow, and brittle toenails are often caused by fungal infections like onychomycosis, which thrives in moist environments and on keratin. Risk factors include diabetes, poor circulation, and ...