Do you have an acoustic neuroma? I am by no means an expert, but I think they CAN affect other nerves coming out of the brainstem such as the facial nerve. I don't know about the trigeminal nerve (it's the 5th cranial nerve, whereas the balance/hearing nerve is the 8th cranial nerve and the facial nerve is the 7th cranial nerve) but maybe it's possible.
But trigeminal neuralgia is most commonly caused by a blood vessel pressing on the nerve. In a younger person, like under 50, it could be multiple sclerosis, especially if it's on both sides. What does your doctor say?
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