Piebaldism refers to –
Piebaldism is a hypopigmented disorder which is present since birth and is characterized by congenital white forelock and hypopigmented or depigmented macules on the central part of the forehead, ventral trunk, and upper & lower extremities. Involvement is bilaterally symmetrical.
Androgenetic alopecia
Erythema nodosum leprosum
Associated with white forelock
None of the above