1. Heredity is the cause of psoriasis. According to clinical findings, this disease often has a family history and genetic tendency. People who have reported family history abroad account for 30% ~ 50%, and some even emphasize 100%. There are about 65,438+00% ~ 20% family history reports in China. Some people think it is autosomal dominant inheritance with incomplete penetrance, while others think it is autosomal recessive inheritance or sex-linked inheritance. If one parent suffers from psoriasis, the incidence of its offspring is three times higher than that of healthy children. If both parents suffer from psoriasis, the incidence of his offspring will be higher.
2. infection. Clinical practice has proved that psoriasis is related to upper respiratory tract infection and tonsillitis. 6% patients with psoriasis have a history of pharyngeal infection. We found that psoriasis in many children is closely related to tonsillitis. For example, a mother and her three children suffer from acute tonsillitis at the same time. After the disease was controlled, three people developed psoriasis. It is effective to treat this patient with antibiotics. The rash can be obviously improved or subsided after tonsillectomy, which shows that infection is an important factor in the pathogenesis of psoriasis.
3. Metabolic disorder. The research on blood chemistry, skin histochemistry and skin pathophysiology of psoriasis failed to achieve beneficial results. In the past, some people thought that the onset of psoriasis was related to the disorder of lipid metabolism. This is also a factor leading to psoriasis.
These are the common causes of psoriasis. Although the high incidence of psoriasis is young people, besides young people, everyone should pay enough attention to the prevention of psoriasis. Once you get stuck with psoriasis, it may haunt you for a long time. Instead of seeking medical treatment everywhere, it is better to do the corresponding prevention work as soon as possible.