Parinaud's syndrome. For full discussion of the image hear ‘Clinical neurology with KD’ 🎙podcast episode 9. The link is given in the profile. A dorsal rostral midbrain lesion causes it. The vertical gaze palsy is due to the involvement of riMLF and the Interstitial nucleus of Kajal in the thalamo-midbrain junction. The lid retraction and convergence retraction nystagmus are due to the loss of supranuclear inhibition to the third nerve nucleus. The light near dissociation is due to damage of the pretectal nucleus or the decussating fibres of the pretectal nucleus in the posterior commissure. The pupillary reflex will be absent, while the accommodation reflex will be present. The accommodation reflex is preserved because the accommodation pathway enters the Edinger- Westphal nucleus more ventrally. #clinicalneurologywithkd #neurologyteachingclub #neurologypodcast #NTC #neurology #neurosciences #neuro #clinicalneurology #medicine #clinicalmedicine #kdpodcast #mbbs #medicos #doctors #neuroanatomy #casediscussion #medicineresidents #residency #medschool #futureneurologist #neuroimages #NEET #finalmbbs #neetpg #neetsuperspeciality #neetmedicine #eanneurology #nejm #aanbrain #neuroimage https://www.instagram.com/p/CcdZWYVvJfE/?igshid=NGJjMDIxMWI=
