MiraDry is a device that uses microwave technology to selectively destroy sweat glands in the underarm area. For anyone with life-disrupting excessive sweating, this effective permanent treatment is a godsend. Unlike Botox, it is permanent, and does not require repeated multiple injections every few months to maintain. It does require diluted local anesthesia at the time of treatment because the procedure generates heat during treatment. Lumps, swelling, tingling, and discomfort are pretty normal in the few weeks after the procedure, but cases of ongoing permanent problems are rare to nonexistent. Sometimes the treatment works in one session, sometimes a second treatment is required. Be sure that only your physician performs this treatment, to select the proper settings for safe but effective treatment. Lumps and red marks two months after treatment should gradually improve, but if you are still concerned, see your dermatologist for evaluation.