Right now, out here it's the darn pollen ! For about the next month or so will be bad. Always makes me sneeze !
Do you sneeze when you go out in the sun? Any ideas as to what causes this?
As echooos echooos said:
The photic sneeze reflex (also known as photoptarmosis, Autosomal Dominant Compelling Helio-Ophthalmic Outburst Syndrome (ACHOO)[1] and colloquially sun sneezing) is a condition that causes variably difficult to control sneezing in response to numerous stimuli, such as looking at bright lights or periocular (surrounding the eyeball) injection. The condition affects 18-35% of the population, but its exact mechanism of action is not well understood.[
What happens is that the invisible solar sneeze monster of Traal flies up your nose.
Source: Wikinosia
hay fever.