Piebaldism refers to:
Androgenic alopecia
Idiopathic guttate hypomelanosis
Association of vitiligo with white forelock
Acquired condition
Piebaldism Rare AD disorder of melanocyte development characterized by congenital white forelock and multiple symmetrical hypopigmented or depigmented macules. Etiology: Absence of melanocytes in affected skin and hair follicles as a result of mutations of the KIT proto-oncogene. Symmetric involvement of central forehead, ventral trunk, and mid regions of upper and lower extremities. Idiopathic Guttate Hypomelanosis (IGH) is a benign and asymptomatic skin manifestation characterized as diffuse hypopigmented macules, or white spots.
Hypo Pigmentary Disorders