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A member asked:
What are causes of deep vertical lines on my thumb nails?
A doctor has provided 1 answer
Two primary concerns: Trama to the nail matrix can lead to ridges and splitting in the nail. Nail changes can also be seen in certain autoimmune conditions (such as dermatomyositis or psoriasis). However, the primary cause seen in your age group are vertical ridges that result from age related changes called onychoschizia.
Answered 1/16/2019
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