Aww your poor little fella :( and you
My stepdaughter has mystery pains in her knees that she has had since she was little, she's 17 now. We always have ice packs at the ready in the freezer for her and sometimes she will be up in the middle of the night with tears running down her cheeks. It's so hard to see them hurt and feel so powerless. There has never been an explanation for them. I hope you get some answers.
This brings to mind a boo boo bear for me. I've seen them out there. They are bears stuffed with grain that can be heated or chilled. I wonder if something like that would be a comfort to your little guy.
Lupus, livedo reticularis, Raynauds, cold urticaria, endometriosis, bursitis, arthritis, Sjorgens, anemia, leukocytosis, vasculitis, pleurisy, asthma and all that fun stuff!
Be who you are and say what you feel because those who mind don't matter and those who matter don't mind - Dr. Seuss