Photic sneeze reflex, officially known as ACHOO syndrome, causes sudden sneezes when exposed to bright light. This reflex affects up to 35% of people and is linked to the crossing of optic and ...

The photic sneeze reflex is also known as "autosomal dominant compelling helio-ophthalmic outburst syndrome," according to the Cleveland Clinic, or ACHOO. This reflex is an autosomal dominant ...