It started all as a headache, the following day dizziness and vertigo, i was given some antibiotics but the problem did not end. I was later sent to an optician and given light glasses, since i had a vision issue, but still there was pressure in my head. This was about 4 months ago, I went for a head CT scan last week and nothing was found, at least I don't have a brain tumor, I've been sent to a neurologist. What could be the issue here for those exoerienced.