IT is not my forte elizabetth, this is part of it
Evolution of Munchausen Syndrome by Proxy as a Diagnosis
Munchausen syndrome by proxy derives from adult Munchausen syndrome, which was first described in the literature in 1951 by Asher. In adult Munchausen syndrome, the patient fabricates and/or induces his own symptoms and presents himself for treatment. The description of Munchausen syndrome by proxy was first made in 1977, after British pediatrician Roy Meadow recognized that mothers of two children in his practice were engaging in dissimulations that put their children in the patient role, using the children as proxies. Subsequently, Meadow has collected and presented a number of cases, noting from the outset that is was often the doctors who harmed the child most through their unnecessary tests and treatments.
Originally, Meadow observed the mother of the child as perpetrator and the child as a simple victim, stating in 1982 that only children up to age six were used as proxies because a child older than that would likely reveal the deception. After two more years of study, however, he reported in 1984 that an older child could act as a confederate of the mother, with the two involved in a sort of folie â deux, a pattern that might be perpetuated even after the child reached adulthood. Thus, Meadow began to describe the complex psychological nature of MSP.
Today, our understanding of the perpetrator role has expanded as well. For example, MSP has been found to be practiced with children not the perpetrator's own (Elkind, 1983; United States vs. Woods, 1973). Sigal, Carmel, AItmark, and Silfen (1988) described a male perpetrator abusing two female adults, while Sinanan and Haughton (1986) cited the bizarre case of a female perpetrator who manipulated nurses and their families into the proxy role, seeing to it that they received about 100 unnecessary injections, from which one of the nurses became very ill.
Sorry to other folks if this clogs up the board a bit!