The SCA is frequently the cause of trigeminal neuralgia, where it compresses the trigeminal nerve causing lancinating pain in the distribution of this nerve on the patient's face. However, at autopsy, 50% of people without trigeminal neuralgia will also be noted to have vascular compression of the nerve.
The arteries of the base of the brain. Superior cerebellar artery labeled near center. The temporal pole of the cerebrum and a portion of the cerebellar hemisphere have been removed on the right side (left half of diagram). Inferior aspect (viewed from below).