Ozarmagan G, Saylan T, Azizlerli G, Ovül C, Aksungur V L
Department of Dermatology, Istanbul Medical Faculty, University of Istanbul, Turkey.
Acta Derm Venereol. 1991;71(1):75-6.
A positive pathergy test in patients with Behçet's disease has been accepted as a diagnostic criterion by many authors, but in recent years it has been claimed that the test has a decreased positivity. We have examined the test in 92 proven cases of Behçet's disease, using 20G and 26G disposable needles and evaluated them after 48 h. Maximum positivity was found to be 65% when we used needles of size 0.9 mm (20G), but the reactivity was considerably less when 0.3 mm diameter (26G) needles were used. The disposable needles used nowadays are less traumatic to initiate the reaction than were the non-disposable ones used in the pre-AIDS era.
白塞病患者的阳性同形反应试验已被许多作者接受为诊断标准，但近年来有人声称该试验的阳性率有所下降。我们使用20G和26G一次性针头，对92例经证实的白塞病患者进行了该试验，并在48小时后对其进行评估。当我们使用0.9毫米（20G）的针头时，最大阳性率为65%，但使用直径0.3毫米（26G）的针头时，反应性明显较低。如今使用的一次性针头引发反应时造成的创伤比艾滋病流行前使用的非一次性针头小。
