Wind of white purplish or white patches on the skin is pathological change of sex of a kind of decolour, it is skin, derma reachs subcutaneous tissue wool to the cell reduces the melanin inside bursa or disappear, the skin is whiten, hair also can bleach. Human body skin is reach by cuticular, derma subcutaneous tissue and accessary implement composition. Among them, skin divides 5 again, by in base layer, spine cell layer is outside arriving, makings layer, hyaline layer and corneous layer. These 5 departments are formed by two kinds of cells, namely horny protein cell and dendritic cell, what dendritic cell is located in skin is the most rock-bottom - base layer. Dendritic cell has 3 kinds, among them one of it is melanin cell, melanin cell can use cheese ammonia acid, melanin is synthesized below the action with cheese ammonia enzymatic acid. Because acid of ammonia of the cheese inside the melanin cell inside the skin and wool bursa is enzymatic,wind of white purplish or white patches on the skin is active bring down or disappear, and the pathological change of cuticular decolour sex that cause.

Interpretation of the cause of swift as the wind of white purplish or white patches on the skin makes reduce element of the following respects:

1, mental nerve and chemical element;

2, oneself immunity element;

3, element of melanin cell self-destruction;

4, endocrine element;

5, ion of cheese ammonia acid, copper lacks an element relatively;

6, heredity and infection element;