Why do relations sneeze when they draw from outside and they look at the sun?

Whenever i look at the sun i always sneeze. Some folks tell me that it's because your body know it's outside and it is getting rid of stuff in your muzzle when your outside. I still am not for sure why.Why do relations sneeze when they draw from outside and they look at the sun?
allergy my kids and husband have it.
It is in actuality caused by the sun within your eyes. What happens when you look at the sun is that your eyes will volentarily contract. In some populace, the contraction will squeeze the tear ducts surrounded by such a way that it irritates the interior of your echo. Causing you to sneeze.