TN symptoms are
The attacks usually occur in brief paroxysms of electric shock
-like, sharp (lancinating), stabbing, burning pain
lasting a few seconds to one or two minutes which are separated by pain-free intervals of varying lengths.
The pain is excruciating in intensity. Typically, a pain attack is accompanied by tic-like cramps or involuntary spasms of the facial muscles ("tic douloureux").