Because the hair cause of disease of wind of white purplish or white patches on the skin is more complex, include psychological society element, habits and customs. The action of a variety of elements such as area profession, climate and season:

(1) have apparently genetic tendency, for heredity of one euchromosome dominance.

(2) oneself immunology says, often incorporate disease of other oneself immunity, wait like diabetic, malign anaemia, thyroid disease, and can be in serum fish antibody of a few oneself.

(3) bad doctrine of oneself of black element cell: Black element cell is destroyed by noxiousness material action, cause antibody generation, cause more cell to destroy, and into one vicious circle.

(4) hypothesis of nerve chemistry factor: Damage constant edge innervation, some and mental scar are concerned. Daily and main reason has the following kinds of factors: Industrial pollution, agriculture pollution, snack and beverage, endocrine and immune function are lack of maladjusted, microelement, genetic element, clinical observation, only a few case of illness and heredity are concerned, but the cure that does not affect this disease.