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: Dental
Hanging curtain sign is seen in 
Select and explain. 
A. Ptyriasis alba, B. Pitriasis versicolor, C. Pityriasis rosea, D. Pitriasis miliaris
C: Pityriasis rosea
Answer: C: Pityriasis rosea 
Explanation: A skin rash that sometimes begins as a large spot on the chest, abdomen or back, followed by a pattern of smaller lesions.