I posted about a year ago on the dermatology forum about having abnormal nail issues. I have, on one thumb a bubble/dent in the middle of my nail. It never goes away...I also have it on two of my other Fingernails
. The dermatologist said that it is only a concern if it is "all" your Fingernails
. The issue I have is I also have unexplained elevated lft's both slightly elevated about 50/45 alt/ast. They have been repeated many times over the past few years and stays the same.