Nail infections represent one of the most underestimated health challenges facing Americans today, with medical professionals ...

Medically reviewed by Katlein Franca, MD Toenail fungus, or onychomycosis, is a nail infection that can make your toenails thicker, change color, or break apart. It affects about one in 10 people and ...

Nail crumbling, and the lifting of the nail, could be signs of nail psoriasis. Nail psoriasis is a condition in itself, but it is also an independent risk factor for psoriatic arthritis.So, if ...

There are many more examples of nail problems besides these, including crumbling nails, pitted or lined nails, clubbed or ...

Nail thickening or crumbling; Nail thinning or splitting; Toenail fungus is highly contagious and, if you have a fungal infection on your foot, the fungus can spread to one or more of your nails.

Some nail polishes — dark or red colors, in particular — can stain the surface of your nails, Dr. Rubin said. This isn’t harmful, but you might not like the way it looks, he added.

Stock image: A woman filing her nails. Sam Edwards/Sam Edwards. Connor added that chronic inflammatory conditions, such as psoriatic arthritis or eczema, may also disrupt nail growth.

Both fingernails and toenails are susceptible to infection, which usually appears as discoloration and thickening of the nail, and crumbling edges. The condition most commonly occurs in toenails.

Though crumbling nails are classified by the NHS as “severe,” Dr. Grant says even milder nail psoriasis can affect your day-to-day life. Advertisement ...

Thickened nails: Thickened, discoloured or crumbling nails may be a sign of fungal infections, psoriasis or circulation problems. The issue could also be due to repetitive microtrauma and aging.

There are many more examples of nail problems besides these, including crumbling nails, pitted or lined nails, clubbed or swollen nails, and those with red marks under them.