Photogenic Epilepsy: Self-Precipitated Attacks

Robertson, E. Graeme

doi:10.1093/brain/77.2.232

Cited by 59 publications

(58 citation statements)

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“…Although the patients showed no pattern of sensitivity at varying frequencies between 5 and 30 frequencies per second, Ames found the greatest response overall occurred at 10 to 20 frequencies per second 5 . Photoparoxysmal response during photic stimulation has been similarly noted throughout the literature on patients with Sunflower syndrome 2–4,6–8,10 …”

Section: Eeg Featuresmentioning

confidence: 74%

“…Ames followed seven patients with similar handwaving episodes over 2 to 14 years. She highlighted the sun‐seeking behavior, or heliotropism, of these patients that Robertson had described in his case series 17 years prior 2 . Ames suggested that the heliotropism may be a compulsive behavior, but, based on patient interviews, rejected the theory that patients gained any pleasure from the handwaving episodes.…”

Section: History Of Sunflower Syndromementioning

confidence: 99%

“…EEG abnormalities consistently described throughout studies focused on patients with Sunflower syndrome are similar to those commonly associated with generalized epilepsy. Robertson summarized the EEG findings of his four patients with handwaving episodes as showing ‘varying forms of spike and slow wave discharges of high voltage, usually irregular and usually of brief duration’ 2 . In Barnett et al's series of clinically followed patients with Sunflower syndrome, EEG characteristics commonly featured generalized epileptiform activity, including bifrontal or bioccipital predominant spike and polyspike wave discharges with a range of frequencies of 1Hz to 4Hz 10 .…”

Section: Eeg Featuresmentioning

confidence: 99%

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Sunflower syndrome: a poorly understood photosensitive epilepsy

Geenen

Patel

Thiele

2020

Develop Med Child Neuro

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Sunflower syndrome is a rare photosensitive epilepsy which has received little attention in recent medical literature. The historical cases documenting the epilepsy's stereotyped handwaving motion in front of light characterized the behavior as self‐inducing seizures via mimic of stroboscopic effect. However, the relationship between handwaving episodes and attendant generalized electroencephalogram abnormalities, and an appreciation of the compulsive attraction the sun and other light sources hold for these patients, suggest the handwaving motion may be a part of the seizure rather than a mechanism of self‐induction. The lack of awareness of Sunflower syndrome often leads to misdiagnosis. The seizures are often refractory to traditional anticonvulsant medication, and patients resort to behavioral intervention, such as hats and sunglasses, to reduce handwaving episodes. Further study is required to determine the syndrome's natural history and to identify more effective treatment options. What this paper adds Sunflower syndrome is a rare condition that is often misdiagnosed. Awareness of the clinical and electroencephalogram characteristics of Sunflower syndromemay reduce the prevalence of misdiagnosis.

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Section: Eeg Featuresmentioning

confidence: 74%

Section: History Of Sunflower Syndromementioning

confidence: 99%

Section: Eeg Featuresmentioning

confidence: 99%

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Sunflower syndrome: a poorly understood photosensitive epilepsy

Geenen

Patel

Thiele

2020

Develop Med Child Neuro

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“…Indeed, some seizures may be precipitated for primary or secondary gain. 103 These forces must be recognized and modified before anticonvulsant agents can manifest their full pharmacologic effects.…”

Section: Factors Influencing Clinical Pharmacologic Response To Anticmentioning

confidence: 99%

Clinical pharmacology of anticonvulsant compounds

Gunn

Gogerty

Wolf

1961

Clin Pharma and Therapeutics

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“…EEG of an18 year old man with primary generalised epilepsy. Above: Two slow eye-movements; the first is followed by a run of spike-wave activity, after the secQnd much less paroxysmal activity occurs.…”

mentioning

confidence: 99%