miraDry is the first and only device cleared by the U.S. FDA for the treatment of excessive underarm sweating or axillary hyperhidrosis. Hyperhidrosis is a medical condition whereby a person has abnormally increased or excessive perspiration or sweating most commonly on the hands, feet, armpits (axillae) and groin area. According to the Hyperhidrosis Support Group, approximately half a million people in the UK are affected with the condition. The device delivers precisely controlled electromagnetic energy to the armpit which heats the sweat glands and destroys them. This results in an immediate and dramatic reduction in underarm sweating. Sweat glands do not grow back, so the treatment is long lasting. In a clinical study, patients experienced an average of 82% reduction in underarm sweat after two treatments. Treatment prices start from approx £1,995 for a single session. Two treatments are generally required, however some people find that one treatment provides an adequate reduction in sweat.