My daughter has an abundance of medical symptoms and we are not getting a good response of what to test: Symptoms: Low weight (she is following celiac diet for that), she is 5'3 and just now weighs 89.5 pounds, nicotine ring around mouth sometimes more visible than others. About this time last year her feet started collapsing and muscle weakness in her legs. They tested muscle strength and it was down but did not come back with anything definitive. It had stopped progressing (she could barely walk upstairs) but she is now having pain, burning, tingling in her legs and into one hip and occasional blurring in one eye lasting just a few seconds, but almost daily. They have done an MRI of the brain and has been tested for MS. Help!