My 14 year old daughter ( who was diagnosed with fibromyalgia last year) is experiencing muscle weakness in her legs, dizziness, extreme fatigue and problems with cognitive function. MRI s of the brain and spine are normal. Hypoglycemia has been ruled out. She is taking physical therapy twice a week. She walks most of the time with a cane or walker. At times she seems to be improving physically but then has a crash and gets worse again. We re having problems getting appointments with specialists because tests are normal. I m researching everything I can; can you suggest any possible causes or specific tests to run?
Her history is very suggestive of myopathy. Whether it is isolated or associated with other CNS feature will need detail examination. I would have asked for muscle biopsy and CSF examination as well. These tests need specialist doctors. Try to get early visit.