What usually makes you sneeze? For most, it's typically dust, pollen, or some other unwelcome invader. However, for a subgroup of people, exposure to bright light can launch an onslaught of sneezes.

As a teenager, Manuel Spitschan discovered that just like his father, if he felt the urge to sneeze, looking at bright light could induce it. What seemed like a funny family quirk is actually rooted ...

Add Yahoo as a preferred source to see more of our stories on Google. Light blue, nearly transparent, lines are seen almost tangled on the left side of the image. They go through the dark part of a ...

The sun does wonders for our bodies overall. It's a natural mood stimulator because it gets that happy, feel-good hormonal chemical serotonin flowing, so to speak. Even when we're feeling fine, ...

There is a little-known condition called photic sneeze reflex, or autosomal compelling helio-ophthalmic outburst (ACHOO) syndrome. It occurs in response to certain stimuli: for example, when you are ...