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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Do Black Stripes On The Finger Nails Indicate?

For the past several months I ve noticed my pointer finger on my right hand I am right handed keeps developing a black stripe done it, from cuticle to tip of nail. I have gently filed it down, it s still there. I have come to the conclusion that this may be an issue. It s just the one finger. I have checked all digits carefully, this is the only finger that has developed this characteristic. Any insight would be much appreciated. Warmly, Bonnie I am 60 years old, very rarely ill. I have been a smoker for 40+ years, although I have cut way back I do still smoke. I was a heavy drinker (at least 3 drinks most days) for the past at least 7 years.
Thu, 5 Jul 2018
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Pulmonologist 's  Response
Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.

This kind of stripes in nails are commonly seen due to iron, folic acid and calcium deficiency.
Smokers and alcoholics are more prone for these nutrients deficiency.
So get done blood levels of iron, calcium and folic acid.
If deficiency, you will need supplements.
Better to quit smoking and alcohol because these are not good habits.

Hope I have solved your query.
I will be happy to help you further.
Wish you good health.
Thanks.
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What Do Black Stripes On The Finger Nails Indicate?

Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. This kind of stripes in nails are commonly seen due to iron, folic acid and calcium deficiency. Smokers and alcoholics are more prone for these nutrients deficiency. So get done blood levels of iron, calcium and folic acid. If deficiency, you will need supplements. Better to quit smoking and alcohol because these are not good habits. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.