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
True about Pityriasis rosea is – 
Select and explain. 
A. Self limiting, B. Chronic relapsing, C. Life threatening infection, D. Caused by dermatophytes
A: Self limiting
Answer: A: Self limiting 
Explanation: Pityriasis rosea is thought to be a viral disease caused by HHV6/7, which is self limiting and subsides in 6-12 weeks.