There is a considerable amount of information if you go to "google" and type in:
Glossopharyngeal neuralgia, multiple sclerosis
I read most of the info on the first page of references that came up, and there was some interesting things to consider; differential dx, potential for it to be something else very similar (considering the person has MS), etc. It's worthwhile to look into this . . .
Sorry about your friend, whatever is causing it. I had a numb mouth, tongue, throat and lips for several weeks one time, and it was scary enough.
Cherie
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I am not a Neurologist, Physician, Nurse, or Hairdresser ... but I have learned that it is not such a great idea to give oneself a haircut after three margaritas
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