With the pressure in your head plus all the other symptoms I would suspect you have an infection that's spread to your brain. And that you most need antibiotics.

Do you have a stiff neck as well?

Here's an article about Lyme meningitis causing stroke.

http://query.nytimes.com/gst/fullpage.html?res=9C0CE1DE153FF934A2575BC0A966958260

Lyme meningitis is not the same as the other kind of meningitis, so it needs to be treated with different things. Until you can see a doctor who knows about Lyme you can get Colloidal Silver -- which kills all types of bacteria, over the counter. Sovereign Silver appears to be best.

The herbs Andrographis and Resveratrol are specific for brain inflammation and headache. It sounds crazy that herbs can help something so severe, but in my experience they work much better than antibiotics. Stephen Buhner recommends them in his book Healing Lyme.

I've had this type of meningitis many times without knowing what it was. It's incredibly miserable, and dangerous. And most doctors have no clue what it is. The pressure for me was usually worst in the back of the head. I had an MRI when it was like that and nothing showed up, either.

My doctor was merely going to prescribe muscle relaxants, but I went to a alternative medical clinic and tested positive for lyme.

I'm sorry you're suffering so much. Don't mean to be presumptuous with the information but what you're going through sounds so familiar.

When I first experienced lyme meningitis the amount of pressure made me think that my skull was actually shrinking. My brain felt squeezed. But now I know that it was actually my brain SWELLING.