Hi and welcome to HCM.
It sounds like migraine
attack or neuralgia
(facial or trigeminal). There is no specific cause,but some authors think that infecion, cold
wheather and wind or some food can provoke such paijn. So you should rest in dark room,avoid noise,wind and cold water. Take nonsteroid painkillers and wait for improvement. It can be autoimmune disorder as weel,as a part of RA. In this case steroid therapy might be considered. Wish you good health.