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.
Valli
G
G
Institute of Clinical Neurology, University of Milano, Italy.
Zago
S
S
Cappellari
A
A
Bersano
A
A
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*