Chickenitis is a condition or disease that causes people to act like a chicken, often clucking uncontrollably.
The first known case was of a red haired girl born in 1950 in Rushville, Illinois. She has the strain of the condition known as Rhode Island Red. Doctors think she has the condition because she was unable to be vaccinated against Chicken Pox due to allergies. The condition is controlled by eating eggs.
The condition is genetic. If a child doesn't exhibit symptoms by the age of 12, he/she is unlikely to get it but up to age 12, he/she can wake up at any time with the uncontrollable urge to act like a chicken.