Photic sneeze reflex wiki

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sneeze

Avatar f tn The photic sneeze reflex (also known as photoptarmosis, Autosomal Dominant Compelling Helio-Ophthalmic Outburst Syndrome (ACHOO)[1] and colloquially sun sneezing) is a condition that causes variably difficult to control sneezing in response to numerous stimuli, such as looking at bright lights or periocular (surrounding the eyeball) injection. The condition affects 18-35% of the population, but its exact mechanism of action is not well understood.