If you're like me and have a lot of head pressure these days it could be Lyme and friends (in my case Babesia) but it can also be your lymph system which doesn't work quite as well since your immune system has taken a hit.
I found this video on how to help with the head pressure if you have a lot of fluid in your head that needs to get down. Great and easy...I'm starting this today!
http://www.youtube.com/watch?v=QA-wi0d7-Ro