Dilation is most commonly and closely associated with aging. Dilation of VRS has been shown to correlate best with age, even when accompanying factors including hypertension, dementia, and white matter lesions are considered.In the elderly, VRS dilation has been correlated with many symptoms and conditions which often affect the arterial walls. Such conditions associated with VRS dilation in the elderly include vascular hypertension, arteriosclerosis, reduced cognitive capacity, dementia, and low post-mortem brain weight etc so consult a neurologist and u have to some inner ear problem like labyrinthitis /vestibular neuronitis /meniers disease and screen for diabetes ophthalmopathy- get Well soon :)