I have a light brown /grayish band of 3mm wide on my thumb nail since last 3 years.no other problems associated with the same but the pigmentation is the concern.there has been no change in the shade of the pigmentation.rest i dont have any other problems that i know of...
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Greetings, What you have - as i can decipher from history and the picture that you have attached is - a condition called melanonychia. This is a harmless condition and usually occurs in dark and brown skinned individuals like Indians and Africans. This is nothing to worru about - however, in whites and European population this may be associated with certain significant conditions - so they usually consider nail biopsy - especially if the nail fold is involved. Howevre, in your case i dont think you need to worry about that.
Longitudinal melanonychia is the dermatological term used for your condition. It is highly recommended to see a Dermatologist. The underlying cause can be multi-factorial and very very rarely it can be an early sign of melanoma- a form of skin cancer. So do not delay the diagnosis. Hope it helps.
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