Well, I'm back. It wasn't really terrible or anything. I just don't like needles.
A solution was injected into the fluid layer around my brain/spinal cord. I am supposed to spend the next 24 hours in a reclined position to keep it in my lower back. If I lay flat, it will go into my head and give me an SOB of a headache I guess. I'm supposed to drink caffeinated beverages, and stay off my feet too.
I felt when the guy squirted the stuff in, it made my ears pop, and I felt pressure behind my eyes and in my head. Beforehand he explained that essentially he was adding volume of fluid to this closed system that protects the brain and spinal cord. The fluid is called spinal fluid and is produced by the brain. He used an xray monitor to find a spot where he could stick the needle in between the vertebrae in my lower back. I jerked when I felt the needle go all the way in there.
