Thank you for your comments. Yes, I know its not a GI Problem, didn't realize I was posting under GI. Can't say the page is user friendly. My mistake.
This is not really a GI problem, and probably should be posted in the dermatology forum.
In any case, I would have a skin specialist look at the nails. Obtaining sample nail clippings and sending it off for a fungal culture can confirm the diagnosis of an infection. If present, then appropriate anti-fungal medications should be started.
There are also various rheumatological diseases that can present with fingernail symptoms, and if suspected, various anti-antibody tests can be done as well as a referral to a rheumatologist.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin Pho, M.D.
www.kevinmd.com
www.twitter.com/kevinmd