MY wife's Dr. just put her on some high powered Vitamin meds because she was way low on her blood test. that is something we just never think about.
I can remember years ago playing in all night clubs that my fingers would bleed and I would have bandaids on all my fingers and keep on playing. this was on a grand piano though, about 1962. I had to quit playing for quite awhile for those fingers to heal up.
Bebop