The answer is B. 5-20% of patients with trichotillomania engage in trichophagia, ingestion of the hair they pull. Trichophagia can result in trichobezoars which can result in intestinal obstruction, necessitating surgical intervention. Screening questions for trichobezoar include unexplained epigastric or abdominal pain, changes in stool color, unintentional weight loss, or symptoms of anemia. If a trichobezoar is suspected, a CT abdomen is diagnostic in 97% of cases.

Publication reference : Grant J et al. Trichotillomania. AJP 2016. 173(9): 868-874.
Reference URL: https://www.ncbi.nlm.nih.gov/pubmed/?term=trichotillomania+american+journal+of+psychiatry+2016