Ct scan of the brain is normal. numbness left cheek, left side of head, left arm and leg feel numb sometimes. sensitivity to sound, too loud... ?

Numbness: I'm sorry that you are having all of these symptoms. You obviously have been to see someone in order to get a CT scan. Do you have a headache as well. You have some sensitivity to sound, we can't see the rest of your symptoms. If you haven't yet you need to see a neurologist, you probably need an MRI and an MRA or angiogram. You need someone to guide the ship of diagnosis to find out!