“…85 Oral involvement consisted of erythematous, pseudo-vesicular, purpuric, and erosive lesions, but only in 2 cases the direct immunofluorescence examination revealed the typical granular deposits of IgA along the basement membrane, that is a sine qua non for the diagnosis of DH. Similarly, 57% of 27 patients with DH were found as having oral lesions, which included ulcerations, erythemas, and atrophies 86 ; however, no direct immunofluorescence study was performed.…”