Brain Magnetic Resonance Imaging By definition of an<unk><unk> , all tests other than the EEG are normal. However, high resolution brain magnetic resonance imaging is probably mandatory because of the high incidence of symptomatic<unk> <unk> es with the same clinico-EEG manifestations. Electroencephalography The inter-ictal EEG shows<unk>  paroxysms, often demonstrating fixation-off sensitivity. However, some patients may only have random<unk>  spikes, whereas others may have<unk>  spikes only in the sleep EEG, and a few may have a consistently normal EEG. Photoparoxysmal abnormalities occur in patients whose seizures are triggered by lights. Ictal EEG, preceded by regression of<unk>  paroxysms, is characterised by the sudden appearance of an<unk>  discharge that consists of fast rhythms, fast spikes or both. Ictal EEG during blindness show pseudo-periodic slow waves and spikes, which differ from those seen in ictal visual hallucinations. There are usually no postictal abnormalities. Differential diagnosis The differential diagnosis of ICOE-G is mainly from symptomatic<unk><unk>  and migraine where misdiagnosis is high. The differential diagnosis from migraine should be easy because elementary visual hallucinations of<unk>  seizures develop rapidly within seconds, are brief in duration (2–3 minutes) are usually colored and circular. These are fundamentally different from the visual aura of migraine which develops slowly in minutes, is longer lasting ≥5 minutes and mainly achromatic with linear patterns. Symptomatic<unk><unk>  often imitates ICOE-G; neuroophthalmological examination and brain imaging may be normal. Thus, high resolution MRI is required to detect subtle lesions. The differentiation of ICOE-G from Panayiotopoulos syndrome is straightforward. The seizures of ICOE-G are purely<unk> , brief, frequent and diurnal. Conversely seizures in Panayiotopoulos syndrome manifest with autonomic manifestations, they are lengthy and infrequent; visual symptoms are rare and not the sole manifestation of a seizure.
Idiopathic childhood occipital epilepsy of Gastaut
Benign familial infantile epilepsy
Benign infantile epilepsy
Benign familial neonatal seizures
Photosensitive epilepsy
Northern epilepsy syndrome
Childhood absence epilepsy
Vertiginous epilepsy