I was at a gig the other night and toward the end of the third 45 minute set, my index finger on fretting hand curled up to the point of me having to use my right hand to physically uncurl it. This has happened only once before after playing bluegrass mandolin for several hours. After limping through the song and massing/stretching it out, I was able to finish the set, though with discomfort and stiffness.
It's several days later and finger is still a bit sore, as well as muscle running down down forearm.
I play often and have been for over 40 years, so not due to laying off the instrument. It was an outside gig in SC, very hot and humid- I may not have been hydrated enough. Additionally, I do have minor arthritis.
Would love to hear thoughts or similar stories.
Wondering if gypsy and jazzy chords have anything to do with it?