“…Although RAU has been clinically described since 1898 (von Mikulicz and Kummel), the cause of the disease remains unresolved. Auto-immunity (Lehner, 1969(Lehner, , 1972Dolby, 1970Dolby, , 1972Rogers et al, 1974;Rogers, 1977), food hypersensitivity (Thomas et al, 1973;Marquardt et al, 1973;Wray, 1982;Wray et al, 1982;Eversole et al, 1982), bacterial hypersensitivity (Barile et al, 1963(Barile et al, , 1968Donatsky and Dabelsteen, 1974;Donatsky, 1975Donatsky, , 1976Donatsky, , 1978, viral infection (Sallay et al, 1971(Sallay et al, , 1973Hooks, 1978;Eglin et al, 1982), and immunoregulatory defects (Greenspan et al, 1981Gadol et al, 1985) have all been proposed as immunopathogenic mechanisms in RAU.…”