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
Annular herald’s patch is seen in 
Select and explain. 
A. Psoriasis, B. Pityriasis alba, C. Pityriasis rosea, D. Nocardiasis
C: Pityriasis rosea
Answer: C: Pityriasis rosea 
Explanation: Herald’s patches are seen in Pityriasis rosea Some patients develop single patch 2 or 3 days earlier than the main eruption this is called Herald’s patch.
About Pityriasis Rosea Commonly seen in young adults
* Commonly found on upper trunks along cleavage lines
* The lesions are Scaly and erythematous* (cigarette paper scales are found)