An example of the phobia
. The elevator does not have the "13th floor".
Triskaidekaphobia[n 1] is the fear of the number thirteen. The number 13 has been linked to bad luck in the western superstition. Buildings in the United States does not have the "13th floor".
The term was first used by Isador Coriat in Abnormal Psychology.
There is also a fear of Friday the 13th. This fear is called paraskevidekatriaphobia[n 2] or friggatriskaidekaphobia.[n 3]
13 is not unlucky. People have no reason to fear it.