What causes eczema

summary

Our skin after the symptoms of eczema, will be serious itching, will also harm the health of the patient's skin, troubled the normal life of patients, friends need to be careful of the occurrence of eczema, should cause eczema appear cause attention can, bring friends to understand the cause of eczema appear what factors.

What causes eczema

1. Genetic factors: (1) eczema is significantly higher in some races than in other races, such as the incidence rate of colored race is higher than white. 2. Lupus has familial aggregation tendency, and 10% to 12% have 1 or 1 or more first-degree relatives. 3. The incidence rate of eczema in twins is 25% to 70%, which is significantly higher than that in twins. ④ The expression of HLA-B8, hia-dr2, HLA-DR3 and hla-dqw1 in patients with eczema was significantly higher than that in normal people.

2. Sex hormone: the occurrence of eczema has obvious gender difference. ① Women of childbearing age are 10 times as many as men, while women of non childbearing age are only three times as many as men. The incidence rate of eczema in female rats is earlier than that in male rats, and the condition is serious. The male and female NZB/WF1 incidence rate tends to be consistent after castration. (3) the incidence rate of eczema was significantly reduced in female non gonadal active period (<13>55 years). ④ Both men and women with eczema have increased estrogenic products. ⑤ Pregnancy can induce eczema, which is related to the change of sex hormone level during pregnancy.

3. Environmental factors and others: infection, recently found in HIV infected patients with autoimmune phenomenon, suggesting that autoimmune may involve the role of retrovirus. It has been reported that patients with eczema have at least high titers of IgG and / or IgM antibodies against 12 different viruses and 4 retroviruses, suggesting the relationship between infectious factors and autoimmunity. Infectious factors can stimulate the immune response and lead to the production of cytokines, which can induce eczema in people with lupus quality.

matters needing attention

After understanding these introductions, we have learned what causes eczema. It can be seen that the causes of eczema are more complex. After the onset of eczema, there will be obvious abnormalities in the skin, which will damage the health of the patient's skin. Friends should pay attention to the occurrence of eczema and clearly understand the related causes of the disease.