Thanks for your query
The symptoms as I gather from your mail is progressive symptoms starting with twitching of right eye lid to current state of pain along right side of head. The duration seems more than 2 years. There are times when you are having imbalance and indefinite cephalicl sensations.
Most probably you are not dealing with anything sinister. The duration of 2 years of symptoms in reassuring in a way as longer the duration of headache less is the chance of having any structural aetiology.
I dont think there is any role of prochlorperazine
and symptoms definitely are not related to paroxetine
I would suggest getting thorough neurological examination including Fundus exam. If your doctor feels necessary he may also advise you to get a MRI
A course of Amitryptiline may be worth try