Make Dermapath Easy: Pemphigus & Differentials by Abhijit Das
1. Subcorneal pustular dermatosis (SPD), also known as Sneddon Wilkinson disease, presents with sterile pustules in annular or serpiginous pattern
2. Acantholysis in SPD due to proteolytic enzymes in pustules
3. Pemphigus foliaceus & erythematosus: 2 superficial forms of pemphigus
4. Nikolsky sign positive in pemphigus (Lateral pressure causes sliding off epithelium)
5. Pemphigus vegetans: A variant that heals with verrucus vegetations