Psoriasis, also known as “psoriasis”, is a relatively common chronic inflammatory skin disease. When it comes to psoriasis, it is difficult to cure, the treatment time is relatively long, and repeated attacks. So, what are the causes of psoriasis, I organized the occurrence of psoriasis causes of disease, I hope it can help you. First, bacterial infection Bacterial infection is a very common one to induce and cause psoriasis. Almost nearly half of psoriasis patients can be found triggering infections. Streptococcal infections, especially pharyngitis, are the most common triggers. Streptococcus is isolated in periodontal abscesses, perianal cellulitis, and impetigo. Streptococcal infections can cause pemphigus vulgaris, especially in children and adolescents in general. It can also cause pustular psoriasis or aggravate plaque psoriasis. At some point, sinusitis, whoosh tract infections, gastrointestinal diseases, genitourinary infections and other diseases can also cause psoriasis. HIV infection can also aggravate psoriasis. Second, mental stress Clinical evidence shows that the relationship between mental stress and psoriasis is already very clear, it is a very important reason to induce the onset of psoriasis, but also can aggravate the existing psoriasis. The aggravation of psoriasis often occurs within a few weeks to a few months after being mentally stimulated. Third, endocrine disorders, estrogen levels may affect the immune system, endocrine is actually in control of our body’s real “behind the scenes”, psoriasis and endocrine gland function of the relationship, has long been emphasized. It has been found that some patients have pituitary adrenocortical dysfunction, urinary ketone steroid reduction, and clinically there is also the application of corticosteroid treatment of this disease. Fourth, allergic factors Usually, people with psoriasis are particularly sensitive to food and drugs, and there will be body skin allergies, redness and swelling and other phenomena. At this time, must go to the hospital in time for treatment, the early stage can be completely healed. However, if the cause of allergy cannot be identified and treated in time, it may lead to psoriasis.