I lived in the Northeast. In the winter my hands and fingers would dry out so badly that they'd crack and literally bleed. Painful. It would take weeks for them to heel after I started treatment on them.
I could create the problem in any season if I was plastering/drywalling and/or painting and being in water or washing my hands many times in a day..
I tried a number of products, some prescription from doctors, over the years. I ended using in the one below and have for years now.
In years where I was smart enough to treat twice daily at the start of the cold & dry weather I would have no problems that year. In years where I neglected to do so the problem would return consistently like Freddy in "Nightmare on Elm Street".
Starting treatment with this would slowly cure the problem in two to three weeks. (apply as often as I could while they were in the bleeding/healing stage, then twice a day after).
Generic CVS brand: https://www.cvs.com/shop/cvs-health-healing-skin-therapy-lotion-5-5-oz-prodid-1015850
I feel for you, my problem isn’t nearly as bad as yours. I do accept that it gets worse when I don’t do the right things. Used various potions but was just wondering if this O’Keefe was better. I need to buy something now so I think I’ll track some down. I’ll try to be good and use it regularly.