RED not sure if this is where you want the information.
Ive been diagnosed with ATN (yes I know what you say about that diagnosis ;) ) I have pain on both sides of my face all the time. I rarely get just one side. When I do its typically the right side but even then I still have some pain on the left. It is one of the reasons why they ruled out TN.
Let me know what else I can supply you with.