Why would your hands bleed in folds?

Dry skin that cracks: Often does so in the folds on back of knuckles. As the dry skin gets tight and the skin over the knuckles especially that of the pip joints of fingers must stretch a lot during motion. Other areas with so called folds are also areas that if tight, ned to stretch alot to move and tightness cracknig and perhaps bleeding. (if you have a lesion that keeps cracking , bleeding get it seen.