This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin lesions and disorders of pigmentation, Subject name: Dental
Piebaldism refers to 
Select and explain. 
A. Androgenic alopecia, B. Cicatricial alopecia, C. Association of depigmented patch with white forelock, D. None of the above
C: Association of depigmented patch with white forelock
Answer: C: Association of depigmented patch with white forelock 
Explanation: Piebaldism is an uncommon congenital autosomal dominant, stable patterned leukoderma characterized by a frontal, median or paramedian depigmented patch with a white forelock. There are also macules with scattered hyperpigmented islets. Mutations in the KIT gene on chromosome 14 are the cause. IADVL textbook of dermatology, pigmentary disorders, page 742