I agree with Mark, have you been to a neuro that specializes in cervical spine and brain injury and have you had a c-spine MRI with contrast? I had my TBI about a year ago and my PCS is still going strong! lol but I went to an excellent vestibular therapist,she got rid of my vertigo but my dizziness is still there but it sounds like your inner ear troubles are more chronic than mine were, I hope the info helps.