Because of the simplicity and the lack of trauma, you don't get the pathergy
you normally see on someone with pyoderma gangrenosum.
Histopathologic Study of Pathergy
Test in BehCet's Disease.
The patognomic symptoms are recurrent oral aphtae accompanies with at least two of these; positive pathergy
test, skin lesions, recurrent genital ulcers and lesions in the eye.
test was performed for all patients by dermatologists and evaluated at 24 and 48 hours.
skin test result was positive, and she was diagnosed with BD.
The International Study Group Criteria (ISGC) for diagnosis of BD are recurrent oral ulcers, mandatory finding, along with two of the four: recurrent genital ulcers, eye involvement, skin lesions and pathergy
phenomenon is positive in 30% of patients with PG.
The patient had no history of an injury in his mouth, and pathergy
test was negative.
In patients in whom Behcet's disease was considered, Pathergy
test was performed and dermatologic and opthalmological consultations were required.
Immunological tests, including antinuclear, antiDNA, and antiphospholipids antibodies; laboratory tests for Lyme disease; ENA screening for Sjogren syndrome, syphilis, toxoplasmosis, hepatitis, HIV, CMV, tuberculosis, and sarcoidosis; and Schirmer's and pathergy
tests were negative.
Patient was also subjected to pathergy
test, montoux test, test for brucellosis and sarcodosis which were all negative.
According to the International Study Group criteria, the diagnosis of BD can be made in the presence of two of genital ulcers, typical ophthalmic findings, typical skin lesions, or positive pathergy
test in addition to oral aphthous ulcers .