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
'Chancre redux' is a clinical feature of – 
Select and explain. 
A. Early relapsing syphilis, B. Late syphilis, C. Chancroid, D. Recurrent herpes simplex infection
A: Early relapsing syphilis
Answer: A: Early relapsing syphilis 
Explanation: In early latent syphilis (relapsing syphilis), recurrence of chancre occurs at the site of the original chancre, it is referred to as chancre redux.