Do You Have Triskaidekaphobia?

If so, you are afraid of the number 13. If you have paraskavedekatriaphobia you fear Friday the 13th.

Here are some interesting facts about Friday the 13th and the number 13 in general.

• One psychotherapist, who specializes in the treatment of phobias, asserts that 21 million Americans fear Friday the 13th, according to information from About.com .
• The ancient Chinese regarded the number 13 as lucky, according to About.com. The ancient Egyptians also thought 13 brought good luck.
• President Franklin D. Roosevelt apparently suffered from triskaidekaphobia: According to The Huffington Post, he refused to travel on the 13th day of any month and would not host a dinner party with 13 guests.
• Some people believe the fear of Friday the 13th goes back to the Garden of Eden. Supposedly Eve offered Adam the forbidden fruit on a Friday, and they were then ejected from Paradise.
• Want to avoid bad luck on Friday the 13th? There are a number of things you can do to ward off ill fate, according to superstition: Touch wood, cross your fingers, avoid black cats, don't look at the full moon through a pane of glass, and throw salt over each shoulder.

Or, you could simply not worry about Friday the 13th, which is really no different from any other Friday.