I've got an acquired brain injury, am I the only one to get these or does anyone else please? They drive me crazy: can't scratch them. The burning is terrible, words can't describe. Surely I can't be the only one? Docs ask about headaches but never about this - is that because it's very rare or just less known/talked about? And if person much worse injured than me might claw at head and nobody would know why. ? Thanks.