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Injury in different branches of your facial nerve can have different results. If your frontal branch is injured, you may have paralysis in your forehead or be unable to move your eyebrow.
The greater petrosal nerve branches off of the facial nerve in the skull. Along with a chain of other nerves, it innervates (provides nerve function to) the lacrimal gland, which produces tears.
Trigeminal neuralgia is an ongoing pain condition that affects certain nerves in your face. You might also hear it called “tic douloureux.” It causes sudden and severe pain that some people ...