<prompt> Gradenigos triad is caused due to involvement ofAbducens nerveFacial nerveOptic nerveVestibulocochlear nerve  <response>: Gradenigo Syndrome GS is classically described as a clinicaltriad of otitis media, facial pain, and abducens palsy that in the past most commonly developed from infection in the petrous temporal bone i.e., petrous apicitis. Ref otolaryngology dhingra 3e p278 