I'm not sure exactly where to put this, so I'm gonna just put it right here... I've been playing bass and guitar for 27 years..and a couple of months ago, the second knuckle of my left index finger started having some serious issues. The first night it set in, I'd played bass pretty hard for about 3 hours..and a couple of hours later, the pain in the knuckle was so severe that i couldn't clamp the finger against my thumb..and typing even hurt. I iced it good that night, and two days later it seemed alright. But is has become routinely recurring...never as severe as that first night, but it bothers me somewhat most evenings. Evenings that I've played, it bothers me more..but even if I take a couple days off, it will still bother me an evening that I hadn't played at all. I've been playing a lot more bass this year than in the past several years, and I also started switching up between basses more often rather than only playing one. I also do a lot of typing most days, and grip heavy bars doing some weight lifting...but it's only in the second knuckle of my left index finger. Anyone experienced anything like this? Tendinitis..arthritis..knuckle cancer preceding my near death?