2007-07-01 17:13:58 · 7 answers · asked by dragonfreako 2 in Health ➔ Other - Health
It's called "Photic Sneezing."
Apparently, it's caused by a genetic mutation, a "dominant" trait, occurring anywhere for 15-25% of the population. The exact gene or genes responsible for this have not yet been identified.
Exactly how and why this mutation causes the sneeze reflex, due to exposure to bright light, is a mystery. One theory is that nerve signals from the pathway that controls contraction/dilation of the pupils, get confused by the brain stem, and end up triggering the sneeze reflex as well.
Sneezes, in this case, may also be triggered by hot or cold temperatures, or by intense odors, in some people.
Hope that makes sense,
~W.O.M.B.A.T.
2007-07-01 18:44:10 · answer #1 · answered by WOMBAT, Manliness Expert 7 · 0⤊ 0⤋
The bright light overstimulates the receptors in your eyes. Because the nerves in your nose that make it tickle/itch are fairly close, its sort of like the electrical signals spill over to them, causing a sneeze. Or at least, that's what I read when I was a kid. I'm sure this is a simplified version.
2007-07-01 17:18:55 · answer #2 · answered by Jai-sama 3 · 1⤊ 0⤋
Nature makes me sneeze. I just look directly at the sun to help the sneeze come out.
2016-05-21 00:17:04 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Only 25% of the population has this and it's genetic. Mostly caucasians have this and it may be caused by the brain nerve pathways being mixed up between the optic and trigeminal nerve.
2007-07-01 18:55:37 · answer #4 · answered by *~*~*~* 4 · 0⤊ 0⤋
You 2 must be smoking the same weed, that never happens to me.
2007-07-01 17:21:40 · answer #5 · answered by IRONFIST-X2 5 · 1⤊ 2⤋
lol that hasnt happened to me...i just go blind for a while haha :D
2007-07-01 17:21:10 · answer #6 · answered by ☆Rockstar Mentality☆ 2 · 1⤊ 1⤋
hmm...that doesnt happen to me..
2007-07-01 17:21:24 · answer #7 · answered by >wonder whats next< 6 · 1⤊ 2⤋