Fig. 1

Common clinical presentations of FIL. A Patient 28 presented with EN (black arrow) distributed in the V2 and V3 dermatomes of trigeminal nerve. B Patient 6 exhibited EN (black arrow) distributed in the V1, V2, and V3 dermatomes of the trigeminal nerve. C Patient 30 displayed facial features characterized by thickening of both upper and lower lips, extending beyond the midline but not involving the entire lip. D Patient 14 presented with hemimacroglossia and thickening of the lower lip on the affected side