Xanthippe, I had what they called "growing pains" as a child. I remember waking up at night as a small child with screaming, aching pain in my arms and legs. The doctors couldn't figure it out. Usually acetaminophen (paracetamol) worked. But it never went away completely once I grew up like they predicted, and I still hurt that way sometimes. Too often, actually.
Tell me about B6. That sounds interesting, inexpensive, and hopeful.
Coco, glad your bursa is better. Sorry you had to take a bursa break, but I'm glad you're back in working order! Maybe you could try knitting now?