Chihatelny reflex?

On the sun sneezes, not all people, but only 15-35% of the population (about one in four). This feature of an organism is called "Photic sneeze reflex." HSR is inherited and is the dominant autosomal mutation. ("Autosomal" means that the HSR occurs in men and women with equal frequency, in contrast to, say, hemophilia who suffer mostly men. "The dominant" means that if the HSR have parents, it is likely to be and children.)
Syndrome was first described in ancient Greece, but he never was given a lot of attention in the scientific literature as much importance in medical practice, he has not. He refers to genetic disorders, but the cause of these disorders is unclear. One suggestion is that when you look at the sun, the optic nerve sends impulses to the brain to close their eyes from bright light, but this momentum "intercepts" ternary nerve and perceives as irritation of the nose, which, in turn, leads to sneezing. < br />



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