My daughters foot turns purple any time it’s not elevated. She can’t walk on it because of weakness, burning and pins and needles. It’s ice cold and swollen. We’ve been to ER 3x now. She had MRI, CT Scan, X-Ray, Ultrasound and bloodwork and still no diagnosis. She does not know how it started. One day her whole leg started hurting then it was her calf and not her foot. Any advice would be wonderful as I am feeling a bit defeated. She has a neurologist appt scheduled for 11/30, the earliest they can get her in.