A bezoar is a ball of swallowed foreign material most often composed of hair or fiber. It collects in the stomach and fails to pass through the intestines.
Chewing on or eating hair or fuzzy materials (or indigestible materials such as plastic bags) can lead to the formation of a bezoar. The rate is very low. The risk is greater among people with intellectual disability or emotionally disturbed children. Generally, bezoars are mostly seen in females aged 10 to 19.
The bezoar may need to be surgically removed, especially if it is large. In some cases, small bezoars may be removed through a scope placed through the mouth into the stomach. This is similar to an EGD procedure.
Full recovery is expected.
Persistent vomiting can lead to dehydration.
When to Contact a Medical Professional
Call your provider if you suspect your child has a bezoar.
If your child has had a hair bezoar in the past, trim the child's hair short so he or she cannot put the ends in the mouth. Keep indigestible materials away from a child who has a tendency to put items in the mouth.
Be sure to remove the child's access to fuzzy or fiber-filled materials.
Kliegman RM, Stanton BF, St Geme JW III, Schor NF. Foreign bodies and bezoars. In: Kliegman RM, Stanton BF, St Geme JW III, Schor NF, eds. Nelson Textbook of Pediatrics. 20th ed. Philadelphia, PA: Elsevier; 2016:chap 334.
Update Date 7/10/2015
Updated by: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.