I had a very similar experience. Steroid prescribed for two weeks, rash got better but dried my skin out terribly. And came back. A different dermatologist prescribed OTC Sarna Sensitive and it stopped itch and it cleared up. Episode lasted about 6 months. Once in a while it looks like it’s starting again but doesn’t.
Love the ‘throwing jello on the wall to see what sticks” comment. Gave me a chuckle- thanks. Crazy virus 🦠