I have horizontal ridges on one of my fingernails and little pitted indentations on others. Here are some pictures from google that resemble what I have: pitted nails Beau's lines I plan to ask my doctor about this. The internet says it could be a sign of disease or nutritional deficiency. I was just wondering if anyone else had either of these two issues and if you did if you found out what it was from and if it got fixed somehow. Thank you!