When choosing laser treatment for infectious molluscum contagiosum, there will be certain side effects, including pain, edema, bleeding, infection and so on. 1. pain: laser treatment is the use of laser heat energy on the local tissue thermal damage, so in the process of treatment may be a slight pain discomfort, through the appropriate use of some pain medication can alleviate the symptoms, such as compound lidocaine cream. 2. Edema: laser treatment will lead to temporary oozing of local skin, so it will be manifested as local redness and swelling, which can be improved by cold or ice compresses. 3. Bleeding: the laser treatment process may cause damage to the local capillaries and cause bleeding, but most of them will be coagulated in the local blood crust, generally no treatment, to be its natural fall off. 4. Infection: in the case of improper local care, the treatment site may be infected, the main treatment is to give some antibiotic treatment, such as mupirocin cream. As the skillfulness of technology and postoperative care are the main factors affecting the side effects, so when choosing laser treatment, you must choose regular medical institutions.