Classic trigeminal neuralgia (TN) involves sharp, shooting pain in any trigeminal nerve distribution, whereas atypical TN presents with constant aching, numbness or burning that can appear with classic features, leading to a mixed presentation or mixed trigeminal neuralgia.

The Visual Analog Scale (VAS) and the Barrow Neurological Institute Pain Scale (BNI-PS) are 2 of the most frequently employed patient-reported outcome (PRO) tools used by clinicians to rate pain for patients with trigeminal neuralgia (TN).