Countries in the world with different type of vitiligo, according to China Study Group of pigmented skin of vitiligo in 1994 the clinical classification criteria [1], vitiligo, divided into two types, Type II, Phase II.

(a) II

vulgaris and segmental

; 1, an unusual type: into the limitations of sporadic, and the extremities of the Pan-onset.

(1) Limitations: limited to certain parts of the single or cluster of white spots of varying sizes.

(2) Sporadic: scattered in multiple spot,red sole shoes, can occur in any part of the whole body, with a total area of not more than 50% of body surface area.

(3) Pan-hair: white spot over the total surface area of more than 50%, more evolved from the chronic illness.

(4) extremities of: when the initial issuance of leukoplakia mainly in the hand, foot and Zhi Zhi end and the head and face and so on.

2, segmental: white along the segment of a nerve to the skin area, usually unilateral distribution.

(b) Category II

complete and incomplete white spot

; 1, complete white: porcelain white or pure white, white area disappears melanoma, non-pigment regeneration.

2, incomplete white: white melanoma cells decreased the area, because there are still some melanoma cells, white area visible melanin point.

(c) two

advanced and stable

1, the progress of: white spot gradually increased, the original migration of white spot gradually expanded to the normal skin, blurred state.

2, stable: white stop the development, the realm of clear, white edges to enhance the phenomenon of melanin.

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