Does anyone know where the research went regarding cold sores on the lip at the virus which causes them? I heard a doctor once speak on the subject that HSV1 I

Does anyone know where the research went regarding cold sores on the lip at the virus which causes them? I heard a doctor once speak on the subject that HSV1 I think it is for the lips, goes and burrows in the nerves of the jaw and face and jumps over to the auditory nerve at some point. I was never able to verify any of those claims but it sounded feasible.