While there isn’t sufficient research to prove a connection between dry eye and migraines, some studies suggest that the two may be related. Thinking logically, such a connection would make sense. We tend to react to dry eye symptoms by rubbing, itching, and squinting. All of these activities increase pressure around and behind the eyes, which in turn could aggravate headaches.
So what does the research say? A research study called “Dry Eyes and Migraines: Is There Really a Correlation” found that dry eye disease occurs more frequently in patients who experience migraine headaches than in non-migraine patients. Of course, correlation does not equal causation, but this research supports the hypothesis that migraine attacks may be worsened or set off by dry eye symptoms.

photo credit: <a href="http://www.flickr.com/photos/ejpphoto/5249544544/">EJP Photo</a> via <a href="http://photopin.com">photopin</a> <a href="http://creativecommons.org/licenses/by-nc-sa/2.0/">cc</a>