Hi babakba,
Not sure if i have the same issue as you but kinda similar.. I understand how frustrating it is.. I first had these little bubble-like blisters appearing at my thumb 3 yrs ago.. It got worse quite quickly, skin at top of thumb got all scaly and crackly and my nail started separating from the nail bed.. Not long after, affected index finger.. Saw 2 pte skin specialists who diagnosed it as eczema but the topical meds did not help at all.. Got so frustrated cos another 2 fingers got affected too.. My nails were separating from the nail beds and my finger tips were painful and sometimes itchy.. Finally went to skin centre dr leow yung hian and he correctly diagnosed it as nail psoriasis.. He prescribed a lotion for me tp use on my nails and fingertips.. Did not give me oral meds as i'm still trying to conceive.. It did improve but very slowly..
In the meantime, i tried my best not to aggravate it.. I started to use gloves for any wet work, e.g., washing dishes, cutting food, cleaning house.. I used disposable vinyl gloves, can get for $6 plus for a box of 100.. I din wanna use those reusable rubber gloves cos i feel will tend to leave bacteria.. It did help.. I also used balneum intensive cream to prevent the skin from drying up and cracking.. Recently, i started taking this nutritional supplement milk Ensure Life cos i'm starting ivf in a few mths and it's supposed to be good.. After a mth of taking it faithfully, i suddenly noticed a dramatic improvement in my fingers and nails.. I was really surprised.. I read up on vitamins and minerals good for skin and nails and compared to what is in ensure life and realised they're all in there, so maybe it helped..I'm also not sure but will continue taking for now and hope my fingers and nails will recover soon..