Besides the head and brain does a neurologist also deal with neck cancer and all?

Possibly, if…: The head is also involved; otherwise an ENT (ear, nose, & throat) specialist & an oncologist (cancer specialist) would be the ones dealing with the cancer. A radiation oncologist may also be involved.

The "NEUR" in: Neurologist deals with nervous system, central: brain and spinal cord, peripheral, all the other motor and sensory nerves in the body, and autonomic (sympathetic and parasympathetic) - swallowing, heart beat, bladder and sexual control. And neurosurgeons operat on these tissues when needed.More than brain and neck, whole body nervous system and diseases.

No: A neurologist is not trained in cancer treatment (except a minority who are neurooncologists) head and neck cancer is cared for by ENT surgeons, radiation oncologists and medical oncologists.

No they do not: Neurologist - brain and spine neck - ent.