Psoriasis, a common chronic, easily recurring inflammatory skin disease with characteristic skin lesions. It begins as an inflammatory red papule, about the size of a corn to a green bean, and gradually expands or fuses into a brownish-red plaque with clear borders, surrounded by an inflammatory red halo, and a distinct basal infiltrate, covered with multiple layers of dry grayish or silvery-white scales. Gently scrape away the surface scales, gradually reveal a layer of light red shiny translucent film, called film phenomenon. If the film is scraped away again, small bleeding spots will appear, which is called punctate bleeding phenomenon. White scales, shiny film and punctate bleeding are important features for the diagnosis of psoriasis, which is called the triad of signs. The common psoriasis lesions can be roughly divided into three periods from the onset to the final fading: the progressive phase, the stationary phase, and the regressive phase. Psoriasis bathing precautions 1, psoriasis patients pay attention to water temperature and environmental temperature to adapt: water temperature is too high (above 40 ℃) will stimulate new psoriasis lesions, resulting in adverse effects; water temperature is too low (below 34 ℃) can not be better to soften scales and promote blood circulation of the skin, not conducive to the lesions to subside. The general water temperature should be slightly warm or slightly hot to the patient is appropriate. You can also choose the water temperature according to the different types of lesions, such as the common progressive stage and erythrodermic, pustular, exudative lesions, should not receive too strong stimulation, the water temperature should be lower; while the resting stage lesions, especially the obvious hypertrophic plaque type lesions, the water temperature can be higher. In addition, when bathing should also pay attention to improve the environment temperature to prevent cold and cold and cause psoriasis aggravation. 2, psoriasis patients pay attention to the number of times to bathe and the duration of each bath: in the season of low temperature, normal people can bathe 1 to 2 times a week. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. According to clinical experience, if patients can insist on bathing 1 to 2 times a day for 20 to 40 minutes each time compared to patients who use the same medication without bathing, they can usually significantly shorten the healing time. The duration of each bath varies depending on the temperature of the water chosen by the patient and the tolerance of the individual, and 20 to 50 minutes is generally appropriate. If the water temperature is low and the patient’s tolerance is greater, the bathing time can be longer, while the water temperature is high and the patient’s tolerance is poorer, it should be shorter. In short, the degree of bathing maximum should not irritate the skin lesions patients do not feel fatigue, no discomfort as degree. The way in which psoriasis patients bathe: a shower should be appropriate: and not to scratch the lesions excessively, and not to use bath towels and other hard rubbing. It has been proven that any excessive scratching or rubbing of the skin lesions suffer from irritation, often affects the fading of the skin lesions. 4, psoriasis patients in special cases of bathing: generalized pustular, erythrodermic psoriasis patients bath, in addition to the water temperature should not be too high, so as not to stimulate the lesions, but also appropriate to use permanganate A bath or starch bath. For those who are old and frail and have certain internal diseases (such as heart disease and hypertension), it is safer to take a sit-down shower in addition to the water temperature should not be too high, and someone should be around to guard or help with the bathing.