The initial symptoms of symmetrical psoriasis appear as red papules or macules, which gradually expand or fuse with each other to form well-defined patches covered with silvery-white scales, revealing a smooth film after gently scraping away the scales, and multiple tiny bleeding spots after scraping again. The above-mentioned scales, films and bleeding dots are the three main clinical features of the disease. The disease can occur on any part of the body and is symmetrically distributed, most often on the knee, elbow joint extension and head. The treatment of psoriasis includes a variety of methods, but it is best to have an understanding of the stage of the disease in order to treat it. The disease has an acute progressive phase, a quiescent phase and a receding phase in clinical practice. However, the most basic is still the three psoriasis characteristics that are described below. 1, symmetrical psoriasis basic damage is the lesions are red rash or macules, from corn grain to green bean size, covered with loose silvery-white scales, even if it appears to be a red surface large rash, after scratching the surface with nails, there will be multiple layers of silvery-white scales, this is the most basic feature. 2, this disease has a very special symptom, if the scales are scraped away, there will be a layer of red shiny film under it, called the film phenomenon. 3, gently scrape the film can appear scattered small red bleeding dots, like dewdrops, called the phenomenon of punctate bleeding, this is another feature of the common type. The problem is: is psoriasis contagious? It’s not “ringworm”, and it’s not contagious in severe cases. The pain of psoriasis is something that many people are experiencing. There were psoriasis patients ready to leave the country, afraid to be mistaken for infectious diseases by the airport border control personnel and to the hospital to issue a certificate. Experts say that psoriasis is not contagious. “Ringworm” refers to skin diseases caused by fungal infections, such as ringworm of the head, ringworm of the femur, ringworm of the hands and feet, which are all contagious. In contrast, psoriasis is mainly caused by immune and metabolic dysfunction as well as genetic defects; therefore, it is not contagious even in severe cases. Some people may ask: Can psoriasis be cured? “20,000 yuan to cure psoriasis”, “10 days to quickly cure psoriasis” …… from the walls and poles of the past, to the network today, everywhere ” The “best way to get rid of psoriasis” is to use the internet. The so-called “quick cure” for psoriasis is not credible, as it is called “bias treatment” and “high-tech therapy”. A responsible doctor will never say to a patient that they can be cured. The “cure” that patients generally think is the “cure”, while the doctor’s understanding is the “clinical cure”. However, “clinical cure”, the use of drugs to clear the skin lesions, so that the disease can be effectively controlled and the skin lesions do not recur within a period of time after stopping the drugs, can be achieved. This is also the goal that clinicians are currently pursuing in the treatment of psoriasis. Experts point out that those treatments that claim to be “fast-acting” almost always involve the massive use of corticosteroids, and generally patients will relapse or even rebound 2 weeks after stopping the medication, leading to an outbreak of the disease. Some patients believe in the advertisements and over-treat or abuse hormone therapy, which often makes the originally less serious common psoriasis relapse or even evolve into serious erythrodermic type or pustular type, which is more difficult to treat after stopping the medication, which is saddening. Some people may also ask: How to effectively control the treatment? Chinese medicine herbal treatment, should pay attention to the use of drugs according to the severity of the disease. Experts point out that, generally mild and moderate psoriasis vulgaris, it is not recommended to systematically use western medicine, or even use hormones or immunosuppressants, because this is like “killing a chicken with a cow”, and it is also easy to rebound into erythrodermic or pustular psoriasis after stopping the medicine. Mild patients can generally use milder agents. In moderate cases, basic emolliency and Chinese herbal soup treatment can be given first, and if the effect is not satisfactory, then a combination of Chinese herbal medicine and western medicine can be used externally. For more serious symptoms, if the effect of local treatment is unsatisfactory, systemic treatment can be adopted according to the type of psoriasis, mainly including herbal medicine bath, immunosuppressive drugs, 311 narrow-spectrum UVB phototherapy, etc.