“…Oral ulceration similar in clinical appearance to RAS can arise in Sweet's Syndrome (Delke et al, 1981;Driban and Alvarez, 1984;Mizoguchi et al, 1988;von den Driesch et al 1989von den Driesch et al , 1994; cyclic neutropenia (Lange and Jones, 1981;Scully et al, 1982); benign familial neutropenia (Porter et al, 1994a); MAGIC Syndrome (Orme et al, 1990;Godeau, 1993;Le Thi Huong et al, 1993), a periodic syndrome with fever and pharyngitis (Marshall et al, 1987); various nutritional deficiencies with or without underlying gastrointestinal disorders (Eversole, 1994;Grattan and Scully, 1986); and some other primary (Porter and Scully, 1993a,b;Scully and Porter, 1993a,b) and secondary immunodeficiencies (Porter et al, 1994b), including infection with human immunodeficiency virus (MacPhail et al, 1992). Rarely, drugs such as non-steroidal anti-inflammatories (NSAIDS) can give rise to oral ulcers similar to those of RAS, along with genital ulceration (Healy and Thornhill, 1995).…”