A member asked:

I have a black vertical line on my right hand's thumbnail. i noticed this line approximately 3 months ago. should i be worried? i am a 32 year old ma

A doctor has provided 1 answer

Dr. Eric Potter answered

Specializes in Internal Medicine

Could be bad: A vertical line on the fingernail without trauma to the nail deserves an evaluation by a dermatologist to be sure it is not melanoma, a skin cancer type.

Answered 4/4/2016

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A member asked:

I have a black vertical line on my right hand's thumbnail. i noticed this line approximately 3 months ago. should i be worried? i am a 32 year old ma

A doctor has provided 1 answer

Dr. Eric Potter answered

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