Why do I sneeze when I look at the sun?
435769
Dear hot ...\n\nI do that, too.\nI have always wondered why.\n\nI once heard someone say it has to do with the way the light affects your optical nerve.
373821
could be that there is dust accumulating in your office. Try dusting your work area and your computer. Sometimes it's working with all the paperwork. Sometimes it releases a little powder that is most likely to make you sneeze, especially if the paper is old. I had that problem when I would worked with old files or lots of paperwork. Also check to see if you're not allergic to any plants that might be around the office.
550897
A search of the Internet yields a lot of sites that basically say that it's a known phenomenon, but science hasn't figured out why.\n\nThere is speculation that the optic nerve gets overloaded by the bright light and "leaks" onto the nerves that trigger sneezing.
777454
Not everyone sneezes harder when they look at a light.  However, some people have the Photic Sneeze Reflex.  They do sneeze in bright  light.  \n\nThe most prominent theory, from Wikipedia - Photic Sneeze Reflex - http://en.wikipedia.org/wiki/Photic_sneeze_reflex  is\n"The probable cause is a congenital malfunction in nerve signals in the trigeminal nerve nucleus. The fifth cranial nerve, called the trigeminal nerve, is apparently responsible for sneezes. Research suggests that some people have an association between this nerve and the nerve that transmits visual impulses to the brain. Overstimulation of the optic nerve triggers the trigeminal nerve, and this causes the photic sneeze reflex."\n\n----\nSee also OMIM - ACHOO: http://en.wikipedia.org/wiki/Mendelian_Inheritance_in_Man
538672
due to the sudden jerk you get while you sneeze, you automatically make you body tight and then suddenly it becomes loose. thus the blood pressure increases. \nSometimes people feely giddy due to a sudden and big sneeze. this is because, the brain cannot coincide with the blood pressure. thus it happens. but remember this is all just for quite a fraction of a second. \n\nHope it was clear enough.
680079
Just relax.  This is probably just a sub-conscience reaction to not wanting to be heard sneezing.  Nobody should think differently of you as long as you make sure that your hands are clean.
670863
It's probably dust. You can clean all you want but dust is still in the air. When you clean your house you are cleaning the dust that has fallen out of the air and landed on furniture. You can't clean your air unless you have a special filter.\n\nDo you have any animals in the house? It could be an allergy to an animal.\n\nDoes it only happen in your house, or other indoor places?\n\nAs far as sneezing fits, that's how it effects some people. There isn't much you can do about it.
475713
It doesn't do that with everyone....\n\nbut in most people the nerve from the eye (Optic nerve) runs just next to the nerve for the nose(Olfactory nerve).\n\nSo a powerful light stimulate the optic nerve, which stimulates the Olfactory nerve (from proximity) - the result is a feeling that you need to sneeze.\n\n\n-- edit --\nWhoops.. not the olfactory nerve- that conveys odors...\n\nHere is a snip from a web page addressing this issue:\n\nQ. Why Does Sunlight Cause Sneezing?\nFrom Apply Now, Your Guide to Vision.\n\nUp to 25% of us can't escape it. We walk out of a dark movie theater into the bright sunlight, and then it happens: "Ah choo!" This sneeze reflex is a genuine phenomenon. So what causes it? \n\nA. Close association between the eye’s optic nerve and nerves causing the sneeze reflex may explain why an estimated 5-25% of people sneeze with sudden exposure to bright sunlight or other light sources.\n\nSudden bright stimulation of the eye that occurs after a person has become adapted to darker surroundings is thought to bring on the condition, known as photic sneeze reflex. The reflex also is called Autosomal Dominant Compelling Helioophthalmic Outburst Syndrome, known by the acronym ACHOO. (Not making this up. Really.)
341438
Eyeballs popping out when you sneeze is an urban myth.  I have intentionally kept my eyes open while sneezing with no ill effects.  The eye sockets are made of hard bone and are only connected to the sinuses through tear ducts.  Sneezing is a reflex action to the presence of an irritant in the sinus passages.  I would suggest that the reflex involves closing the eyes to prevent the transmission of this irritant into the eyes.
653337
Photic sneeze reflex (also referred to as sun sneezing and whimsically called ACHOO, a backronym for Autosomal dominant Compelling Helio-Ophthalmic Outburst) is a medical condition by which people exposed to bright light sneeze. It has been suggested that the photic sneeze reflex occurs only after someone has been adapted to the dark for at least five minutes, although this is not certain, and is not uniform amongst people with the photic sneeze reflex. The photic sneeze reflex can also cause one to sneeze many times consecutively. The condition occurs in 17% to 25% of humans with more common occurrence in Caucasians than other human races. The condition is passed along genetically as an autosomal dominant trait.
576422
Check this link out.  Another asker had a similar question.\n\nRead the best answer!\n\nANYBODY WHO THINKS THAT IT IS IMPOSSIBLE TO SNEEZE WITH YOUR EYES OPEN IS ILL INFORMED AND SHOULD ALSO READ THIS LINK!
493240
closing your eyes is a natural reaction to many events.  if someone blows in your eye, you will naturally try to shut them.  sneezing elicits this response because you are going through a spastic motion and there are lots of particles being hurled into the air.  it is hypothesized that we evolved this reaction to sneezing to keep those particles out of our eyes.\n\nsneezing involves releasing the air in your lungs at very high velocity.  for the most part, your nose and mouth can expel this gas before the pressure in your sinuses gets to a point that it causes your eyes to pop out.\n\nyour eyelids alone can't prevent your eyes from popping out.  try to close your mouth, nose and eyes as tight as you can and see how the air gets out.  also tell the doctors at the emergency room
155783
My brother sneezes every time he walks into the sunlight. It's called "Autosomal dominant Compelling Helio-Ophthalmic". \n\nHere's some info on it: http://en.wikipedia.org/wiki/Photic_sneeze_reflex
468529
no its not possible to sneeze without closing ur eyes coz its a reflex action that happenes
88528
It is an involuntary reaction.  I wonder if it is to keep our eyes from popping out!  But, really, that's just how our brain directs our bodies during such a complex human action.  Do animals close their eyes when they sneeze too?
315239
Your eyes are forced shuh by a part of the brain that refuses to look at the booger bits that go flying out when you sneeze.\n\nYou have overcome it looking at stuff like go-at-se until that part of the brain just gives up.
927265
This is because when you leave the theater and go out to the bright sunlight, you will see that the dust is more outside so you sneeze.