My son is 30 years old. For the past 6 years every year he has severe headaches, blurred vision, tingling from the waist down and then loss of mobility. He has twice had to learn to walk again. Originally diagnosed with Transverse myelitis but we've been told can't be this as it doesn't reoccur. Had all the tests including lumbar punctures, evoked potentials etc. When Dr's can't decide they say its psychological. We don't agree. Could it be Devics disease or MS? All the tests come back clear.