Autosomal Dominant Compelling Helio Ophthalmic Outburst Syndrome 

Sneezing usually occurs in response to an irritant orinfection, and it is used to clear the nose and protect the sense of smell.When the patient is suddenly exposed to light, the (ACHOO) Autosomaldominant compelling helio ophthalmic outburst syndrome causesuncontrollable sneezing. An ACHOO sufferer, for example, might start sneezingafter exiting a lengthy, darkly lit tunnel into a bright sunny day.

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