Trichobezoar

A trichobezoar is a medical term for a damp wad of undigested hair, moistened by bile and other digestive fluids also known as a hairball. Though uncommon in humans, hairballs have been reported and often associated with trichotillomania (compulsive hair-pulling). In 2014, a teenage girl in Kyrgyzstan had to undergo a surgery to remove a 9-pound hairball from her stomach. She had a nasty habit of picking up hair from the carpet and eating it. In another case, in 2012, doctors in India removed a hairball weighing nearly four pounds from the stomach of a 19-year-old girl.