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
Tzank smear is prepared for ? 
Select and explain. 
A. Leprosy, B. Varicella, C. Fungus, D. Atopic dermatitis
B: Varicella
Answer: B: Varicella 
Explanation: Ans. is 'b' i.e., Varicella Tzank smear findings in bullous disorders Disorders Findings Pemphigus Bullous pemphigoid Varicella-zoster infection Herpes simpex infection Toxic epidermal necrolysis Acantholysis Predominantly eosinophils Multinucleated giant cells Multinucleated giant cells Necrotic cells