Hi Vicky, ouch! that sounds awful. I'm just thinking ther are others in this group that have problems simaliar to what you mentioned. It is so hard to get rid of these things when you don't have an immune system to cooperate with you. You should see a dermatologist about it and make sure what it is that you do have. It's obvious that something has changed since it is no longer a rash. Just because it was once doesn't mean it is the same thing now. As for can it be removed well again that would be a discussion for you and your doctor. However I have heard that others have done several different things only to have them come back again. I don't mean to sound like there is no hope just that you would be wise to get a biopsy and know where you stand and where to go from here.
Good luck I'm sure others will be able to share experiences with you.
"Consider it a pure joy, my brothers, whenever you face trials of many kinds, because you know that the testing of your faith develops perseverance." - James 1:2&3