![holesz](http://static1.refinery29.com/bin/entry/2d9/x/1086741/holesz.jpg)
The good news: You're not alone, and you're not crazy. Up to 16 percent of people experience this fear, with slightly more females (18 percent to males' 11 percent) admitting a fear of "clustered" holes. According to a new study published in
Psychological Science
there may be an ancient evolutionary part of the brain telling people that they are looking at a poisonous animal when they see circular patches or spots, says researcher, Geoff Cole. In general, "clusters" are a trypophobe's worst nightmare.