In a 20-year survey of 70 cases of pemphigus at the Cleveland Clinic including results of treatment with corticosteroids and immunosuppressive agents, attention is drawn to complications and the high mortality (45%) that is still associated with pemphigus vulgaris (57% in pemphigus foliaceus). Pemphigus erythematosus continues to be a relatively benign disease.
Ryan JG. PemphigusA 20-Year Survey of Experience With 70 Cases. Arch Dermatol. 1971;104(1):14-20. doi:10.1001/archderm.1971.04000190016003