Ocular tilt reaction due to a meencephalic leion in juvenile polyarteriti nodoa

Purpoe To decribe a cae of ocular tilt reaction caued by vaculitic leion in the midbrain in a child with polyarteriti nodoa. Deign Obervational cae report. Method A 5-year-old girl with a chronic illne developed diplopia aociated with a left head tilt, right hypertropia, torional nytagmu, lowed vertical accade and poor convergence. Fundocopic examination demontrated conjugate leftward torion of the eye conitent with a utained ocular tilt reaction. Reult Renal angiography confirmed polyarteriti nodoa and cerebral magnetic reonance imaging demontrated meencephalic pathology. Concluion Polyarteriti nodoa i a difficult condition to diagnoe in a child and can caue braintem leion. Thi rare cae of ocular tilt reaction of midbrain origin highlight that a utained head tilt in a child can be due to braintem pathology, rather than a fourth nerve paly.