Classification, classification and staging of vitiligo

Type:Uv phototherapy   Time:2018-11-16 11:58:19 Vitiligo is a common skin disease and an acquired skin pigmentation disease with an incidence of about 0.5% to 2%. The correct classification of vitiligo helps patients to analyze and judge their condition, so as to develop a correct treatment plan. Director Li Shunbai of Guizhou Vitiligo Dermatology Hospital pointed out that vitiligo is divided into two types, two types and two stages.

1, related classification

£¨1£©vulgaris type: distributed on both sides of the body, and is divided into limited type, loose hair, general hair style and abdomen face type.

Limited type: white spots of different sizes or clusters that are limited to a certain location.

Scattered hair: scattered in multiple white spots, varying in size, can occur in any part of the body, but more symmetric distribution, the total area does not exceed 50% of the body surface area.

Pan-type hair: White spots exceed 50% of the total surface area, even spread to the whole body, only a few or no normal pigmented skin, generally considered to be related to autoimmune abnormalities, and more from the first two types.

Limb type: white spot is mainly distributed in exposed parts such as the toe end of the hand and foot, and a few general white spots can be associated with the body.

£¨2£©segment type: generally unilateral distribution, white spot is one or several pieces, along the skin area dominated by a cutaneous nerve segment, more common in children.

2, related classification

£¨1£© Complete leukoplakia: The boundary between white spot and normal skin is clear, pure white or porcelain white. The white spots in the white spots become white or mostly white, and there is no pigment regeneration. Melanocytes disappeared in leukoplakia and negative for dihydroxyphenylalanine (dopa).

£¨2£© incomplete leukoplakia: incomplete leukoplakia pigmentation, pigmentation spots left, white hair in the white spot did not become white or most did not white, melanocytes in the white spot area decreased, positive for dihydroxyphenylalanine.

3.how to distinguish the progress period of vitiligo, stable period, improvement period!

£¨1£© Progressive period (developmental period): The leukoplakia increases, and the early-onset leukoplakia gradually migrates to the normal skin, the boundary is blurred, and the local occasion is itchy.

£¨2£©Stable period (quiescent period): The white spot stops developing, the boundary is relatively clear, and the pigmentation of the white spot is deepened.

£¨3£©improvement period (effective period): the white spot boundary is clear, the edge pigment is deepened, the pigmentation band appears, gradually infiltrates, and the white spot area shrinks; the scattered pigment island (melanin) appears in the white spot; the number of white spots gradually decreases