"hypermobile people" Exactly how many people are afflicted with this "condition" or "syndrome"? Is is real or is it a catch-all diagnosis made up by the medical community based on a check sheet of symptoms with no preexisting pathological causes? In other words, does it exist at all outside the medical lexicon or is it a semantic pocket to place "hard cases" in? Some people are more flexible than other. So what? I'm no M.D. of course, but that left side involvement sounds highly suspicious, like the real reason for the pain on your left side is caused by something psychological or emotional that's affecting the neurochemistry of pain pathways in your brain. That is, unless you've been thoroughly check out by a traditional M.D. who found some problem with your autoimmune system. In the meanwhile, I'd be very wary of terms like "hypermobile people".