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A 35-year-old member asked:

anyone know what this brown line growing on my fingernail could be?

1 doctor answer1 doctor weighed in
Dr. Michael Fisher
Dermatology 32 years experience
Melanonychia: Longitudinal melanonychia may be a sign of subungual melanoma (acral lentiginous melanoma), although there are other diagnosis such as chronic paronychia, onychomycosis, subungual hematoma, pyogenic granuloma, glomus tumour, subungual verruca, mucous cyst, subungual fibroma, keratoacanthoma, carcinoma of the nail bed, and subungual exostosis.

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Similar questions

A 21-year-old member asked:

Why are therewhite marks onmyfingernails?

2 doctor answers3 doctors weighed in
Dr. Gregory Hines
Family Medicine 24 years experience
Be checked: That sounds like mees lines, which can be a sign of heavy metal poisoning or renal failure.
A 21-year-old member asked:

What causes ridges in yourfingernails?

2 doctor answers3 doctors weighed in
Dr. Christopher Nicora
Internal Medicine 24 years experience
No worries: Vertical nail ridges extend from the cuticle to the tip of the nail. Vertical nail ridges often become more numerous or prominent with age, possibly due to variations in cell turnover within the nail. If your fingernails change color or you develop horizontal nail ridges, consult your doctor. These changes could indicate an underlying health condition.
A 39-year-old member asked:

What are the white marks on your fingernails caused by?

1 doctor answer1 doctor weighed in
Dr. Ryan Phasouk
Family Medicine 18 years experience
Can be a lot: Fingernail disorders can be wide and varied as far as causes. Dermatologists are experts in fingernail diseases. White markings, called leukonychia, can be caused by trauma, infections, drugs, or other systemic diseases.
VA
A 22-year-old member asked:

What are the little white marks on my fingernails?

2 doctor answers2 doctors weighed in
Dr. Gregory Hines
Family Medicine 24 years experience
Mees lines: They are an old indication of arsenic poisoning, but in fact, it can be an indication of any recent illness. They are benign.
A 36-year-old member asked:

Why might someone have white marks on their fingernails?

1 doctor answer5 doctors weighed in
Dr. J. Lawrence Dohan
Dermatology 57 years experience
Maybe minor injuries: They are benign. Usually no cause is identified. No harm. They are tax-free. Ignore them.

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Last updated Jul 11, 2018

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