Photic sneeze reflex: Triggers, causes, and risks of ACHOO syndrome - Insider

ACHOO syndrome, aka the photic sneeze reflex, is when you sneeze uncontrollably when exposed to bright light. Scientists are still studying the cause.

What usually makes you sneeze? For most, it's typically dust, pollen, or some other unwelcome invader. However, for a subgroup of people, exposure to bright light can launch an onslaught of sneezes. … [+6412 chars]

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