Extreme Photosensitivity

Photosensitivity and CHD2 Variants

Investigators from multinational institutions hypothesized that disruption of CHD2, which encodes chromodomain helicase DNA-binding protein 2, would be associated with common forms of photosensitive epilepsy or photosensitivity manifesting as a photoparoxysmal response alone.

Drug-induced Photosensitivity.

Ultraviolet radiation is considered the main environmental physical hazard to the skin. It is responsible for photoaging, sunburns, carcinogenesis, and photodermatoses, including drug-induced photosensitivity. Drug-induced photosensitivity is an abnormal skin reaction either to sunlight or to artificial light. Drugs may be a cause of photoallergic, phototoxic, and photoaggravated dermatitis. Th...

Physiology of human photosensitivity.

Human epileptic photosensitivity has been studied in several ways. (a) Visual stimulation that resembles the stimulation normally responsible for seizures, such as that from televisions or videogames, both of which typically use cathode ray tubes in which the display is created in a flickering pattern. Such stimulation is often rendered yet more epileptogenic by programmes with content that als...

Photosensitivity due to ampiroxicam.

Epilepsy and photosensitivity.

In a series of 2053 cases of epilepsy studied 3.9% were found to have some form of photosensitive epilepsy. The mean age of onset was 14.9 years for males, 11.8 years for females. In the age group of 6-10 years there was a definite male preponderance. In 48.2% cases the seizures were caused by watching television and in 7.4% they were precipitated by sunlight or electric lights. Primary general...