My sister has had an Undiagnosed condition for three years of horrible leg pain, tightness, stiffness, and leg twitching, daily. She's at her wots end and doesn't want to live. For the last few months there's a NEW condition, probably related to her leg disorder. She's having extreme pain in upper right thigh...in the back and going into butt. It's so bad she can barely move and walk. No answer from any neurologist. She's diabetic but they ruled out neuropathy. The pain almost makes her feel like she's about to pass out. She's trying to get genetic testing but Many places aren't taking her insurance. This is HEARTBREAKING. she's said so many times, I can't take it anymore. Any ideas of what it could possibly be?