I have just recently change my GP. I asked my wonderful Rheumy for a recommendation. This way they can work together. My GP is also wonderful. When I needed to go to an Orthopedist, it was also my Rheumy who recommended him. Now I am switching dermatologist, you guessed it, at the recommendation of my Rheumy. Now they can all work together without repeating test and know what is going on all the time.
Have you tried taking activated charcoal and clearing the bad out of your body. Look on line for recommendations on how to take it. You need to take it at night if you don't have any meds that it will block. Check with your pharmacist to find out what is best for you . Sometimes, just getting rid of the toxins in your body will do wonders. When the dermy freezes my sores (14-20) at a time I take 4 activated charcoal cap a night for 10 days to get rid of all the stuff that is released from doing this. They heal in a month, instead or 3-4 months.
Hang in there and believe that things will get better.