Table 1 International classifications criteria for Behçet’s disease [11–13] - Criteria of the international study group for BD

Recurrent oral aphtosis (mandatory, seen by a physician and recurrence at least 3 times in a year)

Genital ulceration (or aphthosis, at least once)

Skin lesions (erythema nodosum, necrotic folliculitis and papulopustular lesions, (post adolescent, not receiving steroids)

Ocular lesions (posterior uveitis, total uveitis, retinal vasculitis)

Positive pathergy test (done by needle prick (oblique insertion of 20- gauge needle) or intradermal saline injection and read at 48h by a physician. Positive reactions include: papula, pustula or papula with surrounding erythema)