Triskaidekaphobia

Triskaidekaphobia means fear of the number 13. Fear of Friday the 13th specifically is called paraskavedekatriaphobia or friggatriskaidekaphobia. Those who fear the number 13 "every other day of the month" are said by psychologists to suffer from triskaidekaphobia.http://www.cbsnews.com/8301-504763_162-20013574-10391704.html

Both the number 13 and the day Friday have for long been considered bad luck in some cultures. In fact, the actual fear of Friday the 13th dates back to Roman Times.http://news.nationalgeographic.com/news/2010/08/100813-friday-the-13th-superstitions-triskaidekaphobia/

According to folklore historian Donald Dossey, superstitions and concerns surrounding Friday the 13th are dual. In Norse mythology, having more than 12 gods at a dinner party was considered bad luck. There are also Biblical references to the number 13. The apostle Judas was said to be the 13th guest at the Last Supper. Judas went on to betray Jesus.http://news.nationalgeographic.com/news/2010/08/100813-friday-the-13th-superstitions-triskaidekaphobia/

If you are a sufferer of triskaidekaphobia, fear of the number 13, you may find yourself going out of your way to be extra careful on Friday the 13th. But did you know that there is a specific term for people afraid of Friday the 13th?

There are several reasons 13 is considered an unlucky number. Another reason is because 12 is seen as completeness, since there are 12 months, zodiak signs, and hours of the clock.570 News: It's Friday the 13th (February 13, 2009)

Both number 13 and the day Friday have for long been considered bad luck in some cultures. In the Roman Empire, Fridays were execution days. According to the Christianity, Islam and Judaism, Eve tempted Adam with the forbidden fruit on a Friday and is also believed that Jesus of Nazareth was crucified on a Friday.570 News: It's Friday the 13th (February 13, 2009)