While at home in the UK I recently got a bite from a spider on the forehead 2 days later one side of my head went numb, I got antihistamines from my doc and they did nothing. I then got double vision in my right eye, I have been to hospital and was told to go to my optician, he is now making me a prism for my specs as the double vision is getting worse, the side of my head is still numb although not as bad as it was. Will this ever clear up as it has been 3 weeks now