What Are the Reasons Behind Sneezing?

I’ve always looked forward to my dad’s sneezes. (Yeah, I know how weird that sounds.) Not that I’m constantly hoping he’ll catch a cold, but he has the best sneeze I’ve ever heard. It’s loud, powerful, and it sounds like he’s crying out “Blllleeessss ya!” each time he does it. His sneezes sound wholly satisfying—the antithesis to the barely-audible squeaks emitted by the woman I sat next to on the bus this morning.

The same kind of irritants (dust, pepper, etc.) can create the same internal reaction in all of us, but its externalization is highly individualized. We all know that everyone sneezes differently, but have we ever considered why? For being such a common, everyday occurrence, that little (or big) expulsion of air is actually a complex process involving more nuances than many of us realize.

1. Sneezing’s official name is sternutation.
The word sternutation sounds like a serious medical procedure, but it’s really just another way of saying sneezing. However you say it, the method remains the same. When something tickles the nose lining, the nerves located there send a signal to the brain, which initiates a chain of messages to other parts of the body—chest, abdomen, face, eyelids, the mucus glands in the nose, even the sphincter—that work together to expel the irritant. When we fall asleep, those nerves are at rest, which is why we don’t sneeze while we snooze.

2. We can’t sneeze and keep our eyes open—and no one knows why.
Scientists are still unclear as to why our eyes reflexively close during a sneezing episode. Some believe that it’s an evolutionary adaptation meant to protect our eyes from whatever particles come flying out of our noses and mouths when we sneeze. Others claim it’s just one of many muscle contractions that take place during the progression. And the old wives’ tale about eyelids closing to keep the eyes from popping out is impossible. While a hearty sneeze can put a good amount of pressure behind one’s eyes, it’s not enough to do that kind of damage.

3. How we sneeze could say something about us.
Of all the characteristics that potentially reveal our inner selves, I never thought sneezing could be one of them. However, body language expert Patti Wood says otherwise. She did Benadryl-sponsored study of 547 people and their sneeze habits, coming up with four types of sneezes that she believes are personality indicators.

  • The “Correct” carries Kleenex and is careful to cover her mouth when sneezing, meaning she’s respectful of others and likes to maintain a dignified disposition.
  • The “Supporter” tends to hold in sneezes rather than risk sneezing on someone, which indicates a quiet and caring character.
  • The “Expressive” makes a big production out of sneezing and often sneezes multiple times at once, possibly making her a showy and dominating person.
  • The “Driver” sneezes loudly but quickly, making her direct and forward-thinking.

4. Pepper and pollen aren’t the only things that make us sneeze.
Dust, pollen, and pepper are cited as the most common sneeze catalysts, but they’re by no means the only ones—or the strangest. Particularly pungent aromas and temperature fluctuations, particularly colder air, can make us sneeze, too. Plucking our eyebrows also triggers sneezes in some because it can stimulate nerves in an area connected to the nose. Rubbing one’s eyes and popping pimples cause the same reaction for similar reasons.

About one in three people sneeze when exposed to bright lights, an inherited trait called photic sneezing or ACHOO (Autosomal Dominant Compelling Helio-Ophthalmic Outburst) Syndrome, which also involves sneezing in rapid succession (usually two or three times). Snatiation is a term used to describe the multiple sneezes that come after eating a big feast; it’s also passed down via genes.

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06.03.2009
ann wright
Thank you very much for this article. I am a driver, when I sneeze, I sneeze hard & loud. I can't stiffle it because it would hurt my inner ear, the lining of my throat, & sometimes my chest. I try to bend down low & sneeze under my shirt/blouse into my chest area. Afterwards, I bless myself. Coworkers think that it's quite commical to see & hear, but I toss it off as part of my personality. P.S. thanks for the medical term (sternutation).
05.24.2009
andrea ingco
This is a very enlightening article. Very informative. Now i know that im the expressive one. The nerves on my nose are so sensitive that i sneeze 7-10 times a day.
Physiologically, sneezing is most closely related to orgasm - no other bodily functions come as explosive as those two... Alexa Fleckenstein M.D., physician, author.
I have also heard that some people sneeze when they get sexually excited, though there are no definite conclusions. I have also read that there is tissue inside our nasal passages that engorges and emits mucus during sex, which I suppose for some could cause sneezing. _______________________
05.17.2009
Twilight
I know this will sound really weird but I do sneeze twice or thrice whenever I look at too bright things (e.g. light, sun, monitor, etc.).. Honestly.. I dunno why..
It feels good to write.

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