Everybody knows this pulsating in the head? It feels like my blood vessels expand. Its not all over the day it comes and goes and on some days I am free of it. I've this symptom for a long time. MR Imaging was without results..I wonder if their is an inflammation in my cerebrospinal fluid or if it comes from toxines from the gut like histamin which also can expand blood vessels. My ammonia is high and this can also go into the brain an cause a hepatic encephalitis. Anybody knows anything about this pulsating??