That facial pain thing sounds like "trigemonal neuralgia".

http://www.mult-sclerosis.org/trigeminalneuralgia.html

I had it for many years. In my case it is was the hairs/skin on my right ear lobe" that generated extreme pain when touched very lightly. I also had at that time a numbness in my face and jaw that made it impossible for me to smile.

It has not bothered me for about 3 years. My difficulity swallowing also went away three years ago.

jackD