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Why do some people sneeze on exposure to light?

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  1. Aug 4, 2015 #1
    Why do some people sneeze on exposure to light?
     
  2. jcsd
  3. Aug 4, 2015 #2

    Bystander

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  4. Aug 4, 2015 #3

    Bandersnatch

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  5. Aug 4, 2015 #4
    This can certainly happen to me, but only with strong summer sunlight, not with low winter sunlight or artificial light.
    Usually I get a run of 4-5 sneezes and then feel somewhat dizzy for the next couple of minutes.
     
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