I'm a survivor of medical torture. I avoided non-pdoc-doctors for a long time and had panic attacks when I had to see my pdoc. I still don't like going to the doctor, but I do go when necessary.

I "got over it" when I was so depressed I didn't care anymore about anything, including my fear. Then I had a lot (51) ECT treatments, which sort of worked like exposure theray, I guess, teaching me hospitals could be safe and don't necessarily equate.. well, what I went through.

It does have a name, by the way - iatrophobia.