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A member asked:

Several weeks ago, i've discovered a black dotted straight very thin line underneath the nail (left thumb). is it fungus, cancer, or liver disease?

A doctor has provided 1 answer

Need more info: It is not feasible to provide a meaningful answer without examining you. It is not likely to be fungus or liver disease. Cannot rule out melanoma. It would be prudent to see your doctor.

Dr Ali agreed

Answered 3/18/2015

3.1k views

Thank

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