Trigeminal neuropathy in two horses following trauma to the infraorbital and mental nerves

This case series describes two cases of a head injury resulting in traumatic neuropathy the infraorbital nerve and mental nerve, respectively. Both presented with head-shaking behaviour assumed facial dysaesthesia. is cause not previously described horses. One horse (Case 1) had small wound at level foramen was diagnosed bony fragment adjacent to using computed tomography (CT) ultrasonography. Treatment consisted surgical removal fragment, systemic anti-inflammatories multimodal analgesia. The second 2) nondisplaced comminuted fracture right hemi-mandible CT. line, along multiple fragments, overlying as exits foramen. treated analgesia, healed without requiring stabilisation. Clinical signs took several months resolve both cases. There were no reported dysaesthesia or 6 4 following diagnosis. Long-term follow-up still required assess these Traumatic should be considered differential diagnosis horses presenting behaviour.