An acquired absence of pigment found in spots or patches, although the margin of these spots shows an increased amount of pigment matter. (J Henery Allen)
Loss of pigmentation characterized by various shaped and sized, smooth, non elevated, non infiltrated usually sharply demarcated patches at times with slightly hyperpigmented borders. (Sulzberger woy Witten).
An acquired disease characterized by the progressive disappearance of normal pigmentation in variously shaped and sized white, smooth sharply defined patches with hyperpigmented borders. (F.M.Dearborn)
Vitiligo or leucoderma is an affection characterized by circumscribed patches of skin, from which the pigment has disappeared to a lesser or greater extent. (Douglass)




