Gradenigo&;s triad is caused due to the involvement of
Gradenigo syndrome is the classical presentation and consists of a triad of (i) external rectus palsy (VIth nerve palsy),(ii) deep-seated ear or retro-orbital pain (Vth nerve involvement) and (iii) persistent ear dischargeDue to petrositis in CSOM.(Spread of infection from middle ear and mastoid to the petrous pa of the temporal bone is called petrositis.)Dhingra 6e pg: 79
Abducent nerve
Facial nerve
Optic nerve
Occulomotor nerve
Ear