The use of the term<unk>  first appeared in the literature in 1968. Characteristics of the syndrome include: * The body of a trichobezoar (hairball) located in the stomach, and its tail (hence the reference to<unk>  in the syndrome's name) in the small bowel and/or in the right colon * Small or large bowel obstruction * Occurring in psychiatric patients * Trichotillomania *Abdominal pain *Nausea & vomiting *Gut perforation *Vitamin B12 deficiency *Acute pancreatic necrosis
Rapunzel syndrome
Pretzel syndrome
Nezelof syndrome
Beare–Stevenson cutis gyrata syndrome
Van Wyk and Grumbach syndrome
Johnson–McMillin syndrome
Franceschetti–Klein syndrome
Irlen syndrome