Fig. 1

The imaging findings of trigeminal neuritis initial and after treatment. Fluid-Attenuated Inversion Recovery (FLAIR) imaging and gadolinium enhancement T1-weighted imaging shows a high signal intensity lesion in the left trigeminal nerve (arrow) suggestive of trigeminal neuritis (Fig. 1A and 1B). On sagittal FLAIR imaging, there was no evidence of other central nervous system demyelinating disease (Fig. 1C). The follow-up MRI, conducted 3 months later, shows an improved state of the previously observed trigeminal neuritis (arrowhead, Fig. 1D)