What Is Photic Sneeze Reflex?

Photic sneeze reflex: A disorder characterized by nearly uncontrollable paroxysms of sneezing provoked in a reflex fashion by the sudden exposure of a dark-adapted subject to intensely bright light, usually to brilliant sunlight.

The number of successive sneezes is usually two or three, but can be up to about 40.

Do I have photic sneeze reflex?

It’s not only a change in light that can trigger the sneeze reflex. Some people with photic sneeze reflex are also sensitive to other types of stimuli. For example, if you have a history of photic sneeze reflex, receiving an eye injection — such as anesthesia prior to eye surgery — may trigger a sneeze or two.

Why do we sneeze when we look at light?

Seventeen to 35 percent of the population is estimated to be prone to the photic sneeze reflex (PSR), also known as—no joke—ACHOO (autosomal dominant compulsive helio-ophthalmic outbursts of sneezing) syndrome. PSR is reflexive sneezing set off by light, especially light from the sun.

How many people have the photic sneeze reflex?

Reflexive sneezing induced by light, and sunlight in particular, is estimated to occur in 18 to 35 percent of the population and is known as the photic sneeze reflex (PSR) or the ACHOO (autosomal dominant compulsive helio-ophthalmic outbursts of sneezing) syndrome.

Why do I sneeze after eating chocolate?

Eating dark chocolate

This could qualify as a tragedy: A taste of dark chocolate can activate the same photic sneeze reflex as the sun. This condition is most likely genetic and hits about 18 to 35 percent of the population.

Is photic sneeze reflex rare?

Some researchers have since applied the appropriate acronym ACHOO: Autosomal Dominant Compelling Helio-Ophthalmic Outburst Syndrome. An estimated 10 to 35 percent of the population has a photic sneeze reflex. As it turns out, an estimated 10 to 35 percent of the population has a photic sneeze reflex.

Is Achoo syndrome rare?

The Achoo syndrome is also called the photic sneeze reflex or the helio-ophthalmic outburst syndrome. The syndrome is much more common than has been generally recognized. The syndrome is one of the most frequent of all known genetic traits.

Is Achoo Syndrome Real?

ACHOO syndrome is inherited in an autosomal dominant manner (1). As such, if one parent is affected, their child has a 50% chance of inheriting the syndrome.

Does everyone sneeze when they look at the sun?

But you’re right. About 25% of people sneeze when they look at the sun or another bright light. Sun-sneezing has been called everything from photic sneeze reflex to ACHOO syndrome (for autosomal dominant compelling helioophthalmic outburst). But no one really knows what’s going on.

Does your heart stop when you sneeze?

According to the UAMS’ Department of Otolaryngology/Head and Neck Surgery, your heart doesn’t exactly stop. When you sneeze, the intrathoracic pressure in your body momentarily increases. This will decrease the blood flow back to the heart.

Can you sneeze with your eyes open?

“Pressure released from a sneeze is extremely unlikely to cause an eyeball to pop out even if your eyes are open.” “Although you can focus to keep your eyes open when sneezing, your body’s blinking response is likely there to protect itself from germs,” Huston said.

Why do I sneeze so loud?

The output of a sneeze depends on factors such as lung capacity and the size of the pre-sneeze inhale. More air makes for a bigger sneeze. For some, one sneeze isn’t enough. These multiple, or “paroxysmal,” sneezers sometimes have allergies , according to NetWellness, a non-profit health education organization.

Why do you sneeze twice?

It’s quite normal to sneeze in twos or threes.

Those “bad” particles trapped in the nasal passages and expelled by sneezes aren’t exactly sprinting to the exit. It often takes more than one attempt to kick those irritants out, which can lead to multiple sneezes in a row, Everyday Health reported.