Not sure where it came from. Perhaps it was playing too much guitar, or all the motorcycle/bicycle riding I have done over the years. Or it is just bad luck, but the arthritis in my left thumb sucks. I started noticing it a few months ago. When I started cycling again seriously (more than once a month 😉 ) I noticed that my left thumb was sore afterwards. It has gotten progressively worse, until...
Arthritis sucks
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