“…These lesions are seen in both discoid lupus and SLE [7,11,12] . The pathophysiology of ulceration in the setting of immune dysregulation remains largely unknown, although histologic examination has shown inflammatory infiltrate, likely involving activation of T cells, and release of tumor necrosis factor alpha [10,11] . In establishing a differential diagnosis of the genital ulcers, we considered sexually transmitted diseases, infections, dermatologic diseases-related, related systemic diseases such as Crohn's disease (CD), malignancies, traumatic ulcers, and idiopathic disease [12] .The diagnosis of Behçet's disease can be confidently made if there are at least three reported episodes of mouth ulcers over the past 12 months and the presence of two of the following symptoms: genital ulcers, ocular manifestation, dermatologic manifestation and positive pathergy reaction [13] .…”