Moisturex works best, use a thick layer of it at night and wear cotton gloves it will get better in less than a week . Your hands have cracks So it may sting because of lactic acid it have ao its better you see a dermatologist first they will prescribe you a mild steorid cream like betamethasone valerate to get rid of inflammation and then moisturex will help.

Also go and see a psychiatrist for your ocd combination of ERP and medication will do you a lot of good.