I'm new to the forum, so I hope this is the right place for this.
My son and I typically ride 8-10 miles at a time on our mountain bikes. Yesterday, we did 50. After around 20, the fingers on my left hand started getting numb centered around my wedding ring. I pocketed my ring for the rest of the ride. One day later, my ring finger is still numb, more-so at the tip, and a bit on the fingertips around it. I didn't wear gloves, which I'm sure now I probably should have. Is this common? I'm wondering if I damaged a tendon, or something. I'm not in agony or anything, but I play guitar and have a gig in two weeks. It's tough fretting a guitar when you can't really feel the tip of your fingers!