(Aves malevolus) Two circular red spots, approx. two inches wide, commonly appearing just above the knees after prolonged visits to restrooms. In severe cases accompanied by numbness of the legs.

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.