A bezoar is any sort of concretion found in the intestines of animals. Classically in the stomach of goats and other ruminants and assigned medicinal properties. Human bezoars are pathological. There are various specific sub terms that can be used:
- Diospyrobezoar is a bezoar formed from persimmons.
- Enterolith (bezoar stone) is a calculus type of bezoar.
- Food bolus is a loose aggregate of food items such as seeds, fruit pith, or pits, shellac, gum, soil, and some medications that is not quite a true bezoar.
- Pharmacobezoars are medication bezoars made up of masses of drugs.
- Phytobezoars are composed of nondigestible plant material and are a complication of decreased gastric or intestinal motility due to disease or treatment.
- Tracheobezoar specifically refers to a trichobezoar in the trachea.
- Trichobezoar is a bezoar formed from hair - hairball, Rapunzel syndrome.
Some drugs are known to induce bezoar's such as sucralfate with milky (lipid containing) foods such as enteral feeds.