The Greeks, who were apparently strong on visual aids, originated the term stigma to refer to bodily signs designed to expose something unusual and bad about the moral status of the signifier. The signs were cut or burnt into the body and advertised that the bearer was a slave, a criminal, or a traitor — a blemished person, ritually polluted, to be avoided, especially in public places. Later, in Christian times, two layers of metaphor were added to the term : the first referred to bodily signs of holy grace that took the form of eruptive blossoms on the skin; the second, a medical allusion to this religious allusion, referred to bodily signs of physical disorder. Today the term is widely used in something like the original literal sense, but is applied more to the disgrace itself than to the bodily evidence of it. Furthermore, shifts have occurred in the kinds of disgrace that arouse concern. Students, however, have made little effort to describe the structural preconditions of stigma, or even to provide a definition of the concept itself. It seems necessary, therefore, to try at the beginning to sketch in some very general assumptions and definitions.
Erving Goffman