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Ab irrict-The pathery phenomenon (PP) is one of the hallmarks of Behcet's Discuse (Bl.)). It has been reported to be positive from I 75% to 83% of cases in different studies, PP is tused as ta diagnosis criterion in the Dilven criteria, the Japan criteria, tite'nternational criteria, and the Iran criteria. It is therefore important to know wrther PP is a fix manifestation of the diverse or a cyclic rnanifestation like mutcocultaneous divorders. To ra luate the charateristic of Pº over a period of time, 77 patients were selected randomly (regaardless of their dirixe ctivity or their disease manifestations), to Juve a cconi pathery test. The pathergy test was performed by needle puncture on the skin af fhe foretarn. Three methi gre used: 1-needle prick with a 2ł-gauge needle. 2-needle prick with a 25-gauge neelle. 3-needle prick with a 25-guage needle and the injection of i drop of a sterile normal saline solution. The result was evittittel 24 …