The trigeminal nerve is one of the most common causes of trigeminal neuralgia. The trigeminal nerve controls feeling in the face. A blood vessel can begin pressing on the trigeminal nerve in the head at the brainstem. As we age, it can get worse.
While some say normal aging is what causes trigeminal neuralgia, it can also be caused by other conditions, such as multiple sclerosis or damage to the covering of nerves.
Some researchers have concluded that there are genetic causes of trigeminal neuralgia. For instance, humans can inherit the pattern in which blood vessels form in the body.
While doctors know some of the causes of trigeminal neuralgia, research is needed to develop a better understanding of the condition.