I'm not sure where to post this question actually so hopefully this is the right place.
Over the past two weeks or so, I've noticed a change in the ends of my fingernails that seems to be getting more pronounced and has me a bit concerned. It's happening on the thumbs, index and middle fingers of both hands and in the exact same location/angle, as if mirrored on each hand. It's a concave ridge that goes across the grain of the nails, involving about the last 1/8 of the nail tip and covering about half the width. If I cut them back to almost nothing, that is right where the nail starts to curve up. On the index and middle fingers it's an angled ridge toward the thumb side and on the thumbs, it's more centrally located. Where the ridge starts, the nail bed is a bit red and there is a slight soreness now, sort of like that tender raw feeling you get when you accidentally cut your nails too far back, and the nail thickness is very thin where it is curved up but seems normal on the side that is not curved. The ring and little fingers of both hands seem to be unaffected. Before this, I had noticed that my nails were getting more deeply ridged, the type that follow the grain of the nail, and there has been some brittleness but nothing significant enough to have checked out.
A few facts about me.... I'm a 40 year old male, fairly heavy smoker, very active in the gym doing cardio and weight training 4-5 times a week, 6' 3", thin and eat fairly well. I have no significant medical history of any kind and the only supplements I am taking are a B-Complex and a buffered Creatine called Kre-Alkalyn. I do have a prescription for LeVitra which I do take now and then, maybe 2-3 times a week max, but no other medications.
Any ideas? Thanks for your help.