Narcolepsy is a brain disorder characterised by sleep attacks and abnormal eye movement which affects up to one in a thousand people.

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Despite growing up with a disorder that left his skin and hair pale, as well as his strength and eye sight weak, Torner has succeeded in making the best of his situation.

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Light is used to treat medical conditions including seasonal affective disorder a cyclical depression often tied to low sunlight as well as skin, eye and gastrointestinal conditions.

WSJ: As More Adults Get Acne, New Photodynmic Treatments Use Light