Refractory trigeminal neuralgia due to compression from a fusiform superior cerebellar artery aneurysm: A single case report

•We report the first case of a small, blister superior cerebellar artery aneurysm causing trigeminal neuralgia.•Prior stereotactic radiosurgery may increase arachnoid scarring and/or induce changes in vascular walls.•Consider vascular malformations in cases of refractory trigeminal neuralgia.