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: Skin
Ballooning is characteristic of : 
Select and explain. 
A. Harpes zoster, B. Pemphigus, C. Pemphigoid, D. Insect bite
A: Harpes zoster
Answer: A: Harpes zoster 
Explanation: A i.e. Herpes zoster