So, I have finally found out why I do this one crazy thing I do.
So, whenever I walk outside (from indoors) into a bright sunny day, I sneeze. It never fails. The first thing I do when I get out in the sun is sneeze. I mother would always tell me I was allergic to the outdoors, and being such a shutin I would believe it too :P
Turns out there is a name for what I have, here is the Wiki writeup on it, enjoy!
Photic sneeze reflex
From Wikipedia, the free encyclopedia
Photic sneeze reflex is a medical condition by which people sneeze with sudden exposure to bright light, and possibly also sneeze many times consecutively. It is also referred to as photic sneeze response, sun sneezing, photogenic sneezing, the photosternutatory reflex, being photo sensitive, or even whimsically as ACHOO syndrome with its related backronym Autosomal dominant Compelling Helio-Ophthalmic Outburst syndrome. The condition occurs in 17% to 35% of humans. The condition is passed along genetically as an autosomal dominant trait.
The first mention of the phenomenon is probably in the later work attributed to Aristotle (Problems, book XXXIII).
The probable cause is a congenital malfunction in nerve signals in the trigeminal nerve nuclei. The fifth cranial nerve,
called the trigeminal nerve, is apparently responsible for sneezes.
Research suggests that some people have an association between this
nerve and the nerve that transmits visual impulses to the brain.
Overstimulation of the optic nerve triggers the trigeminal nerve,
and this causes the photic sneeze reflex (persons familiar with data
cable insulation issues would understand this undesigned stimulus as "crosstalk").
Another theory suggests that tears leaking into the nose through the nasolacrimal duct
are a cause of the photic sneeze reflex. The speed of the reflex seems
to favor the first theory, as it happens much too quickly for tears to
be generated and drain into the nose. In addition this sneeze reflex
can be brought on by a sudden inhaling of cold air or a strong flavor
such as a strong mint gum. This implies an overstimulation of any nerve
close to the trigeminal nerve can cause the sneeze reflex.
While this phenomenon is poorly understood, recent research has shown that antihistamines being used to treat rhinitis due to seasonal allergies may also reduce the occurrence of solar sneezes in those people suffering from both conditions.[1] Further, the oft pleasurable nature of sneezing means that there is less demand for solutions to the reflex.