Treatment options Pityriasis vulgaris (pearly eruptions) is a benign condition that can subside after a certain amount of time in some people and last for decades without change in others. Because pityriasis is not contagious and is not a health hazard, it does not require treatment. However, prevention and care are important in order to prevent aggravation of the condition. If the condition is due to circumcision, treat the circumcision as soon as possible. If pearl rash patients require treatment can be used the following treatment methods: 1, laser therapy Advantages: laser therapy is a high-temperature treatment, the temperature can reach 700 ℃ or more. The main cause of pearl rash tissue charring crust, to be scabbed off, the wound surface for the new squamous epithelium cover. Treatment of pearlescent rash generally uses a carbon dioxide laser with an infrared light wavelength of 10.6 μm. The preparation prior to treatment is the same as for electrolysis. The advantages of its thermal effect, in addition to pressure, photochemical and electromagnetic field effects, so in the treatment of anti-inflammatory (to stimulate the body to produce a strong defense immune function), pain relief (so that the tissue edema subside, reduce the chemical and mechanical stimulation of nerve endings) and promote tissue repair (to enhance the anabolic effect of epithelial cells, promote epithelial proliferation, accelerate wound repair), so the treatment time is short, high cure rate. Disadvantages: higher cost, high price of imported laser equipment, so the price of removing pearl rash is also higher and easy to recur. After surgery, you need to change the medication regularly to avoid infection until full recovery. 2, cryotherapy Advantages: cryotherapy is an ultra-low temperature treatment refrigeration source for liquid nitrogen, the temperature of -196 ℃. Treatment according to the pearl rash situation to choose the appropriate probe. To improve the efficacy of freeze-thaw-freezing method, that is, freezing for 1 minute, rewarming for 3 minutes, and then freezing for 1 minute. The advantage is that it is simple to operate. Disadvantages: The disadvantage is that the liquid nitrogen spray is gas, the area is difficult to control, easy to blister after freezing, easy to infect and scarring. The popularity is not as good as laser therapy. 3, drug treatment Advantages: the role of pearl rash necrosis and fall off, the process is easy, because it is topical, so no side effects, not easy to recur, etc.. Disadvantages: the treatment time is longer 5-10 days, and the spot can not touch water for 24 hours or affect the effect.