Allotriophagy is the act of vomiting or disgorging foreign and foul objects, usually associated with a possessed person. (see Demonic possession) Such activities were once viewed as illusions or spells caused by witches or attempts of suicide by the mentally disturbed. During the Middle Ages most of these acts were viewed as indications that the Devil had entered the body of the person.
Foreign objects vomited by the victim could range from live creatures such as toads, snakes, worms or butterflies, to pieces of iron, nails, small files, pins, needles, feathers, stones, cloth, shreds of glass, seaweed or foam. A.G.H.
Guiley, Rosemary Ellen.The Encyclopedia of Witches and Witchcraft. New York: Facts On File.1989. p. 8