It is possible to determine scalp psoriasis by its symptoms, thus, such as red pimples, scaling and burning. However, to confirm the diagnosis, patients need to take relevant tests. The cause of psoriasis is not yet clear, and it may be caused by environmental stimuli, polygenic genetic control, and immune-mediated factors. Psoriasis can involve the skin all over the body, as well as the scalp and joints. If psoriasis occurs on the scalp, it may appear as red papules or macules, which may gradually develop into red plaques, covered with white scales, and when the scales are scraped off, a shiny film with punctate hemorrhages can be seen on the film. Some patients may also be accompanied by burning, pain, itching and other symptoms. Scalp psoriasis can be initially judged after clinical symptoms, but if you want to confirm the diagnosis, you need to carry out histopathological examination, blood test, X-ray examination, etc. to clarify the cause of the disease. Once the patient appears to be suspected of scalp psoriasis, he or she should go to a regular hospital in time to undergo the relevant examinations to clarify the cause of the disease. If the diagnosis is confirmed as scalp psoriasis, you should cooperate with the doctor to take treatment measures.