Jornal de Neurologia e Neurociência

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Anton syndrome due to bilateral posterior cerebral artery stroke with polyneuropathy in a patient with uncontrolled diabetes mellitus

Krishnendu Choudhury*, Swapan Sarkar, Subhadeep Basu, Supratim Ghosh

Anton syndrome comprises of visual loss from cortical damage with patients not perceiving their own blindness in the absence of psychiatric illness or underlying cognitive impairment. Most commonly it results from bilateral posterior cerebral artery stroke.

In 1920, Meyer first reported occipital lobe infarction and postulated compression of branches of the posterior cerebral artery as the causal factor for Anton syndrome.

Joseph Babinski (1857-1932) used the term “anosognosia” for the first time, to describe the unawareness of the deficit in patients with hemiplegia.

We present an elderly man with uncontrolled diabetes mellitus who was admitted with symptoms of sudden blurring of vision and repeated fall but he denied having visual loss. On evaluation he was found to have bilateral posterior cerebral artery ischemic stroke with hemorrhagic conversion leading to cortical blindness as well as distal demyelinating motor sensory polyneuropathy.