Why do some people sneeze on exposure to light?

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SUMMARY

The phenomenon known as Autosomal Dominant Compelling Helio-Ophthalmic Outburst Syndrome (ACHOO) causes some individuals to sneeze upon exposure to bright light, particularly strong summer sunlight. This reflex is characterized by a series of 4-5 sneezes, often accompanied by dizziness. The condition is not triggered by low winter sunlight or artificial light sources. Understanding this reflex can provide insights into the neurological responses to light exposure.

PREREQUISITES
  • Understanding of the photic sneeze reflex
  • Basic knowledge of genetics related to autosomal dominant traits
  • Familiarity with neurological responses to sensory stimuli
  • Awareness of environmental factors affecting human physiology
NEXT STEPS
  • Research the genetic basis of ACHOO syndrome
  • Explore the neurological mechanisms behind the photic sneeze reflex
  • Investigate environmental triggers for sneezing in response to light
  • Learn about other sensory reflexes and their physiological implications
USEFUL FOR

This discussion is beneficial for geneticists, neurologists, and individuals interested in the interplay between environmental stimuli and human reflexes.

Pyrus
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Why do some people sneeze on exposure to light?
 
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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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