The sensation of light is sometimes uncomfortable and may feel like a moderate to severe pinprick or flash of heat. Anesthesia or sedation (calming medication) may be advisable for laser skin resurfacing treatments. If the practitioner or physician elects to use an anesthetic to reduce discomfort during any light-based treatment, all options and risks associated with the anesthetic will be discussed. The treated area may be red and swollen for two to twenty-four (2-24) hours or longer. Cooling the area after the treatment (for example, ice packs, and topical gels) may help reduce discomfort and swelling.