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: Unknown
Riehl’s melanosis involves 
Select and explain. 
A. Face and neck, B. Trunk, C. Extremities, D. Palms only
A: Face and neck
Answer: A: Face and neck 
Explanation: Riehl’s melanosis (pigmented contact dermatitis) involves face and neck