I have been suffering from a headache on the left backside of my head that i think is caused from the muscles in my neck, now I noticed an extremely sore spot on the back of my head, its only sore to the touch, almost like there is a sore there but there is not. After touching it , the soreness spreads a little and becomes warm to the touch. could this be just a vessel that is inflammed, every lymph node in my body is swollen so I would not be suprised, I think the sarc has got my brain now. Has anyone else experienced anything like this? Should I have it checked for a clot? my headache goes away with painkillers but not the sore spot.