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Dr. Andrew Rynne

Family Physician

Exp 50 years

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What do deep ridges running across the fingernails indicate?

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Dr. Kakkar S.

Dermatologist

Practicing since :2002

Answered : 8411 Questions

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Posted on Wed, 24 Apr 2019 in Skin Hair and Nails
Question: I have deep ridges running horizontal across my finger nails (thumbs only) from cuticle to finger tips. Almost as if top layer of my fingernail is disinigrating. I have had no previous servers trauma to my nails. I have had no prior serious health conditions. I have looked online, they are kindof similar to Beaus lines although mine are much worse than any photos I have been able to find.
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Answered by Dr. Kakkar S. 29 minutes later
Brief Answer:

Median Canalicular Dystrophy

Detailed Answer:

Hello,

You seem to have Median Canalicular Dystrophy characterized by longitudinal splitting and riding of the nail plate which resembles a fir tree-like pattern.

May affect one or both the thumbnails. The condition is mostly idiopathic, however, other caused include trauma to the cuticle portion of the nail, subungual tumors, etc.

Hope I have answered your query.

Take care

Regards,
Dr Kakkar S., Dermatologist
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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