I’m Jeri. I am 75. Several years ago I started to have a lot of pain on a skin patch on my lower back. It went on for a long time and then opened in a huge crater with necrosis. Samples were sent to labs, including Mayo, with no conclusion. It was diagnosed as possible autoimmune. It healed but still hurts whenever any pressure is there like when I lie down to sleep. They ruled out Lupus.
Liked by John, Volunteer Mentor