“…Since Abu-Nassar et al (1963) reviewed 14 cases it has been widely reported that this characteristic syndrome, with typical skin lesions, intermittent fever and with or without arthralgia and arthritis in combination with genitourinary gonorrhoea is more common than is usually thought (Abu-Nassar et al, 1963;Kvorning 1963;O'Sullivan 1964;Ackerman et al, 1965;Fred et al, 1965;Bjornberg and Gisslen, 1966;Danielsson, and Michaelsson, 1966;Kahn and Darnielsson, 1969;Wolff et al, 1970). Keiser et al (1968) reported an incidence of approximately 0-4%.…”