I have skin problems and I can't find a solution. What should I do?

I felt something on my skin. It kept itching, so I kept scratching it. After that, I applied ointment and treated it. It didn't itch for a while, but then it started itching again. Worried that it might be shingles, I went to the hospital, but they said it wasn't. I received treatment again and it got better, but it started itching again, and this scar just won't go away. This cycle keeps repeating over and over. It itches, then I get a little hives, then it goes away when I apply ointment, only to recur again—it's endless. Because this has been repeating indefinitely, I think I've been in this state for over a year. What on earth should I do about this? Even the hospital says there is nothing they can do.