Like everything else, it’s all genetics.
yes but the other components can be environmental and through diet.
I developed terrible eczema on my hands that left me unable to work without wearing gloves. My mother suffers from it as well.
my hands cracked and bled anytime I worked with them. It was so bad that was borderline debilitating.
Fast forward 15 years later, once I went on a serious long term diet that excluded all wheat based items my hands cleared away to the point where i can work with gypsum all day without creams and gloves and my hands are perfectly normal.
what a blessing it is to find a solution as simple as excluding a food item instead of thinning my skin using corticosteroid creams and all kinds of other topical bullshit.