★★★★★
But now I'm pleased to inform you that after years of suffering, I finally figured out what the problem was.
Several events lead me to the answer: It was not ringworm, it was an allergy.
Many years ago, I bought some menstrual pads (Equate, Night Time) and immediately after putting them on, I felt like my genitals were on fire. I was sure the pad was contaminated and that whatever fungi present had also spread to my right hand.
Ever since, I can no longer wear menstrual pads, creams, oils, or soap around the genital area. I can't even use regular toilet paper or I have a flare up. Sunlight also affects me, even if I don't get sun in my hands, the eczema appears on each of the same places.
As soon as the allergy strikes, my hand gets a rash too. A rash in circles, just like ringworm.
Throughout the years I went to see many doctors, including an allergist, and nobody was able to diagnose the problem.
What helps is muscle relaxation of any kind, supposedly reducing stress helps but I guess I've never been relaxed enough for that. I hope this information is useful to somebody. Best of luck to everyone who is suffering from this.