Clinically, vitiligo is divided into several types according to the scope of the patches and distribution, that is the suffused style and a skin stanzas type customarily. In order to unify the standard, the Chinese medicine combines Western medicine dermatology and venereal disease association, which constitutes the clinical type and curative effects standard of vitiligo in China. Vitiligo can be divided into two types:
(1) general type:
① The limited type: One spot or white spot of swarm, the size is different, limited at some parts.
② The generalized type: The white spots spread and deliver more, and they usually distribute symmetrically, with the total area of the white spot less than 50% of the surface area.
③ The suffused type: it is developed from the generalized type, and the white spot inosculates mutually to irregular big slice and involves in over 50% of the area of the body surface, sometimes it will remain the normal skin color of the crumb group of islands form
④ The limb end type:The white spot begins in the limb end of the human body, such as the face, hand, foot, fingertip and the tiptoe etc. The minority can take place with the suffused type.
(2) A type of stanza: White spots are one or several patches and follow in a skin district of a domination of the some skin nerve stanza to distribute, general is a single side.
Two types:
(1) White spot of completeness: The white spot is the solid white color or the porcelain white, having no melanin regeneration phenomenon in the white spot, the melanin cells inside the white spot organization disappear with the feminine reaction to dopamine.
(2) White spot of incompletion: The white spot loses color incompletely, in the white spot there is melanin spot, the number of the melanin cells reduces in the white spot organization, with the masculine reaction to dopamine.
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