For years now i've had a pain at the base of my neck on the right side, it hurts if I apply slight pressure, I suffer from headaches, which if left almost always turns into a migraine but they always start at this point in my neck, it feels like a small lump, if I apply pressure to it & deep massage it it hurts like hell but does slightly ease the pain, could this be a tension knot? If anyone could help it would be much appreciated!