Sorry, Sarah, no experience with anything like that. All I know is that I have always had a very sensitive tush...my hip joints click and grind, and my massage therapist is constantly working on all my insertion points and stuff.
I know I've had hard lumps here and there when a lymph node has been aggravated and clogged up, and with good massage and so forth it goes away.
No help here, sorry. Sounds awful!
"The best rides are the ones where you bite off much more than you can chew, and live through it." ~ Doug Bradbury