Follicle mites don't discriminate on the basis of age, but the older you are, the more likely it is you have them. According to a June 2012 article in "Review of Ophthalmology," 84 percent of Americans age 60 or over are estimated to have follicle mites -- from age 70 on, it's a clean sweep of 100 percent. Of the 70 to 80 million Americans with blepharitis, inflammation of the eyelid that occurs most frequently around the lash line, upwards of 80 percent are thought to be infested with Demodex mites. Symptoms include itchiness, especially in the morning when the nocturnal mites are crawling back home; burning; the sensation that you've got something in your eye; crusting and redness of lid margins; blurry vision; and white specks at the base of your lashes that look like dandruff.