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bump! no one?

http://www.mayoclinic.com/health/nails/AN0059 1

My friend gets psorisis under her nails.

I used to have the same problem.  They were noticeably bad.  They grew out and didn't return after I started eating more fish, so it's possible they are linked with protein intake.  (I was basically a vegetarian before that.)  If you google it, you'll find a lot of information on the topic.  I was pretty worried about a vitamin deficiency, but some people say they are normal.  However, it must've been something in the climate, water, or my diet that caused them.  I now live in a different country and eat more fish, and I haven't seen a fingernail ridge since I moved.  I find it hard to believe that it's a coincidence.

Do you have them on every finger?  I had horrible ridges my thumbs, and smaller ones on my index fingers.  The other fingers didn't have any.

I used to have this problem and it was from malnutrition.

my brother had this condition as well. it started off not too bad but worsened over time. he had to see a doctor and had to go to quite a few to figure out the problem. he eventually had to be put on steriods. i believe its from malnutrition (he eats, but is extremely thin, he's one of those fast food eaters thats tiny).