This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Nikolsky's sign seen in all of the following, except: 
Select and explain. 
A. Bullous pemphigoid, B. Mucus membrane pemphigoid, C. Toxic epidermal necrolysis, D. Scalded skin syndrome
A: Bullous pemphigoid
Answer: A: Bullous pemphigoid 
Explanation: Nikolsky's Sign

A bulla can be induced on normal-appearing skin if firm lateral pressure is exerted.
It is acharacteristic feature of pemphigus vulgaris
Nikolsky's sign absent in- Bullous pemphigoid

Positive Nikolsky's Sign Present in

Pemphigus vulgaris
Pemphigus foliaceus
Familial benign pemphigus (Halley- Hailey disease)
Epidermolysis Bullosa Dystrophic, Recessive
Erythema multiforme
Bullous lichen planus
Cicatricial Pemphigoid (Benign mucous membrane pemphigoid, ocular pemphigus
Proliferative verrucous leukoplakia
Toxic epidermal necrolysis (Drug reaction)
Scalded skin syndrome (Bacterial infection)