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What could cause horizontal lines in nails?
They are the same color as nails, not very deep but definitely noticable. These ridges are especially noticable on the bed of my thumbs and also on the toenails of the big toes. Other fingernails/toenails don't seem to have ridges, maybe just a few small ridges on index finger nails.
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351724 tn?1267540618
http://www.mayoclinic.com/health/nails/WO00055


all i can say is either go to your doc if your concerned or check out this web page !
best of luck !
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351246 tn?1379685732
Horizontal ridges and white lines  on nails are seen in trauma to nail bed, kidney diseases, pellagra or Vit B3 deficiency, low protein, arsenic poisoning, and liver diseases. Hence a kidney and liver function test should be done.  
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Avatar universal
Thank you for your answer :)
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I was wondering about this too. Thanks for giving us some answers.
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351246 tn?1379685732
You are welcome!
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363281 tn?1353103243
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way off the beaten track!, BC
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