Welcome to the club. I've been living with it for 10 months untreated due to idiot doctors telling me I had migraines for months. Then taking more months of testing with the neurologist.

There are thousands of causes, typically something pushing on the nerve, but not always.

A neurologist would be the one to see. For me it's a tumor and rare disorder called Tolosa Hunt Syndrome causing the TN, I'm 28 but was 27 when it started out of nowhere.

Now I take neurontin which helps a lot for TN. And steroids for the THS.