亚急性湿疹的原因（The cause of subacute eczema）.doc

亚急性湿疹的原因（The cause of subacute eczema） The causes and predisposing factors of eczema are often due to individual factors and different stages of the disease, so it is not easy to determine. The causes can be divided into external causes and internal causes. The former is common in the food of fish, shrimp and other aspects, such as inhalation of pollen, dust mites and other micro-organisms such as wool, skin suppurative cocci and superficial fungal infection in the living environment, such as sunlight, hot and dry, all kinds of animal fur and dander, and all kinds of chemical substances such as cosmetics, soap, synthetic fiber. The internal factors such as chronic infection, chronic cholecystitis, tonsillitis, intestinal parasites; change of endocrine and metabolic factors such as menstrual cycle, pregnancy, blood circulation disorders such as varicose leg by leg eczema; mental factors on the incidence of this disease is closely related to such as mental tension fatigue. Individual qualities are also important. The susceptibility or tolerance of individuals to various factors can also be enhanced or weakened by physiological or pathophysiological effects. It seems that, in the same environment and conditions, some people are prone to eczema while others do not attack, and some factors, under certain conditions, can increase the patients condition, and in other cases did not cause disease recurrence. According to the clinical manifestations, pathogenesis and histopathological findings, the pathogenesis of some patients may be related to delayed allergic reactions. Allergic condition: (1) allergic to food such as beef and mutton, beef and mutton, fish, shrimp and eggs; (2) excessive feeding leads to indigestion; (3) excessive consumption of sugar causes abnormal fermentation in the intestines; (4) intestinal parasites; (5) strong light exposure; (6) irritation of soap, cosmetics, fur, fine fibers, pollen, and paint; (7) factors affecting milk line contact or eating ce