We report the case of a 72-year-old lady with a magnetic resonance imaging (MRI) occult arteriovenous malformation (AVM) causing trigeminal neuralgia (TN). The possibility of an AVM when managing patients with TN should be borne in mind. Where possible, decompression of the trigeminal nerve should be attempted, as first-line therapy.
Keywords: arteriovenous malformation; microvascular decompression; trigeminal neuralgia.