Transitory and permanent visual field defects induced by occipital lobe seizures.
Visual field defects are rarely associated with epilepsy. We report two patients with a long history of cryptogenetic occipital epilepsy. Both patients suffer complex partial crises accompanied by concentric reduction of the visual field followed, in the first one, by a prolonged left homonymous hemianopsia, and in the second one, by a permanent right inferior quadrantopsia. Occipital and occipito-temporal epileptic activity has been registered between seizures in both patients, and in one patient also during the seizure itself. Differential diagnosis has been considered, especially with migraine.
Institute of Clinical Neurology, University of Milano, Italy.
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G
Valli
S
S
Zago
A
A
Cappellari
A
A
Bersano
D000328:Adult; D004569:Electroencephalography; D004828:Epilepsies, Partial / Q000473:pathology / Q000503:physiopathology*; D006423:Hemianopsia / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000473:pathology / Q000503:physiopathology*; D009778:Occipital Lobe / Q000473:pathology / Q000503:physiopathology; D012640:Seizures / Q000473:pathology / Q000503:physiopathology; D014794:Visual Fields / Q000502:physiology*