Melissa is right about trigeminal neuralgia.
Basically, in the simplest terms, neuralgia means "nerve pain".....
It is pain caused by nerve damage or irritation. The pain is typically intense and episodic, and often felt along the course of the affected nerve.
Since our bodies have millions of sensory nerves, one can have neuralgia pain anywhere in the body (face, arms, legs, back, head, neck, mouth and teeth, literally anywhere...) when these nerves are damaged or traumatized.
Here is a link to a great website called MEDLINE (approved to post here by the Moderators). Lots of info about diseases, drugs, resources of all kinds. They even have a dictionary and encyclopedia for medical terms.
Check it out...I'm linking you to main page on Neuralgia and you'll see many more links about the different kinds of neuralgia and nerve pain from there: http://search.nlm.nih.gov/medlineplu...algia&x=22&y=8