A few years ago I would get patches on the back of my hand that would itch and have tiny blisters. They were persistent and over the counter ointments weren't helping. Finally went to a dermatologist when they got unbearable. The first one I went to prescribed an ointment that sorta worked, but not that great. Ended up going to a second dermatologist when I found out the first one was an anti-vaxxer.
The second one was on top of his game. He straight up said the first ointment wasn't a good one to use and prescribed something much better. It knocked out the spots and itchiness after a week or two. I've had a couple of minor flair ups since, but the ointment eliminates it pretty quick. Haven't had any problems for at least a year.