The sudden, acute onset of an intense itching sensation of the anus in which immediate action must be taken in order to gain relief. The sensation is compared to the feeling of a mosquito biting the rectum, and/or ant bites when accompanied by stinging and burning sensations.

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.