Background: I started on violin at 5. Guitar in HS, bass in college and have been playing bass full time since 1975. I play 12 string acoustic guitar as well for fun and amusement. I have played exclusively fingerstyle right hand since 2003 as a personal challeng to learn it. I have not had any joint, hand pain or finger issues. Up until last month. I have developed an ongoing between the knuckle and middle joint of the left index finger, my freeting hand. I am having difficulty bending the finger strongly enough to fret well. The position that is most painful is the open C chord position on the guitarwhere you need to crook your index a bit and press down. There is no noticeable swelling of the joint such as I would expect from arthritis or something like that. I did trip and strain the left hand out in the yard a few months back, but it didn't seem to bother me at the time. No bruises or anything. Has anyone else experienced the same issues. I guess fretting a lifetime may be taking it's toll. I actually use the 12 string to maintain and increase my finger strength through exercise. Should I continue and ramp up this activity or should I cut it back. I don't use a lot of NSAIDS, I always try to minimize OTC medications unless I have to use them. Or is this what to expect normally for my 50's, the pain will set in and not go away. Comments appreciated. Thanks in advance.