Trypophobia is an aversion to the sight of repetitive patterns or clusters of small holes or bumps.[3][4][5] It is not officially recognized as a mental disorder, but may be diagnosed as a specific phobia if excessive fear and distress occur.[1][4] Most affected people experience mainly disgust when they see trypophobic imagery.[4] A minority of people experience the same level of fear and disgust, and a few express only disgust or fear.[4]
The scientific understanding of trypophobia is limited.[4] Although few studies have been done on trypophobia, researchers hypothesize that it is the result of a biological revulsion that associates trypophobic shapes with danger or disease, and may therefore have an evolutionary basis.[1][4]Exposure therapy is a possible treatment.[1]
The term trypophobia was coined by a participant in an online forum in 2005.[6] It has since become a popular topic on social media.[7]