Sometimes, when you see a bright light, like the sun or a flash from a camera, your body sneezes. It’s called a sun sneeze, and it happens because of something called the trigeminal nerve. This nerve connects your eyes to your nose. When light hits your eyes, it sends a message through the nerve to your brain, which then tells your nose to sneeze. Not everyone does this, only about one in five people get sun sneezes.
Examples
- If you're outside on a sunny day and suddenly see a flash of light from your phone camera, you sneeze.
- Your friend steps into the classroom after being outside in the sunlight, and they sneeze without reason.
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Categories: Psychology · sneezing· light sensitivity· trigeminal nerve· autonomic nervous system· optic nerve