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
Causes of localized hypopigmented macule or patch are all except 
Select and explain. 
A. Vitiligo, B. Piebaldism, C. Pityr i as is alba, D. Freckle
D: Freckle
Answer: D: Freckle 
Explanation: Freckles - multiple, ill-defined brown macules, which darken on sun exposure. Individual macules may show variation in skin color. All the other three condition produces localized hypopigmented macules or patch.