Upper airway tract and upper gastrointestinal tract involvement in patients with pemphigus vulgaris.

Pemphigus vulgaris (PV) is an autoimmune disease involving the skin and mucous membranes. The frequency of upper airway tract (UAT) and upper gastrointestinal tract (UGIT) involvement in PV is not clearly known. Our aim was to determine the incidence of UAT and UGIT involvement in patients with PV.