“…Each compound has a highly reactive negatively charged sulfhydryl group in a stable stereochemical relationship to a similarly negatively charged carbonyl group. Since that time increasing evidence suggested a relationship between onset of pemphigus and treatment with ACE-I or angiotensin receptor blockers (enalapril, lisinopril, benazepril hydrochloride, fosinopril sodium, quinapril hydrochloride, and ramipril) (Brenner & Goldberg, 2011, Ruocco & Sacerdoti, 1991, Ruocco et al, 1993,Gavras & Gavras, 1983 Hutton, & Muller, 1994, Bastiaens, Zwan, Verschueren, Stoof, & Nieboer, 1994, Shelton, 1991, Arnoux, Guiguen, & Verdier, 1987, Katz, Hood, & Anhalt, 1987, Ricci et al, 1986, Saraceno, Citarella, Spallone, & Chimenti, 2008 that the most frequently used culprit drugs were ramipril and enalapril . Since that time increasing evidence suggested a relationship between onset of pemphigus and treatment with ACE-I or angiotensin receptor blockers (enalapril, lisinopril, benazepril hydrochloride, fosinopril sodium, quinapril hydrochloride, and ramipril) (Brenner & Goldberg, 2011, Ruocco & Sacerdoti, 1991, Ruocco et al, 1993,Gavras & Gavras, 1983 Hutton, & Muller, 1994, Bastiaens, Zwan, Verschueren, Stoof, & Nieboer, 1994, Shelton, 1991, Arnoux, Guiguen, & Verdier, 1987, Katz, Hood, & Anhalt, 1987, Ricci et al, 1986, Saraceno, Citarella, Spallone, & Chimenti, 2008 that the most frequently used culprit drugs were ramipril and enalapril .…”