<<Disclaimer: Verify this information before applying it to your situation.>> Hi.. I have been a diagnosed Celiac for about a year and a half. I have noticed that before diagnosis I had brown (look like) splinters under my nails. They went away for awhile, but now have come back. Does anyone have this problem...is it due to a vitamin/mineral difeciancy??? or it is totally unrelated to celiac disease?? It is always woderful to get the feedback of the group. Please post directly to me and I will summarize. Cindy in Bay Area...California