I'm noticing a thin black line on the nail of my right thumb, and it seems to be permanent. It's been there for a while, grows with the nail, and isn't just a stain or mark that can be washed off. I recently came across some information online suggesting it might be a sign of melanoma, which is a bit worrying. I'm aware that online info can sometimes be exaggerated, but I want to be sure there's nothing serious going on. Could this be a cause for concern?

Answered by 1 Apollo Doctors

Dr Anshul Maheshwari

General Practitioner

MBBS
5+ Yrs

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Probable diagnosis is psoriasis,eczema,hypothyroidism,injury,rheumatoid arhritis, melanonychia,Hiv,cancer and anemia etc. vit b12 deficiency .Most causes of black lines do not require treatment..Melanoma is a exception.Treatment of the underlying cause .

Dr. Anshul Suggests...

Consult a Dermatologist

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Answered 16 days ago

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