Iontophoresis is a safe medical procedure that involves sending mild electrical current through water into the skin. Iontophoresis treatment is done to treat excessive sweating or hyperhidrosis. This treatment should be done indefinitely to maintain results. It can also be done for sports injuries by delivering anti-inflammatory medicines directly in to the skin. During iontophoresis, a medical device is used to deliver mild electric current to the affected part of the body that is submerged in water. The currents are delivered to hands, feet, or armpits to block the sweat glands temporarily. Patients may feel a slight tingling during the procedure but it is not strong enough to shock the patient. Hyperhydrosis can occur in certain situations without any reason. It can also be caused due to hyperthyroidism or menopause. The duration for iontophoresis may be several sessions per week. Each session may last about 20 to 40 minutes. Iontophoresis treatment is used for sports injuries also. It is considered very effective for reducing swelling around joints and in relieving pain. Sprains and bursitis also respond well to this treatment. If the patient is pregnant, has eplilepsy or heart condition, has a pacemaker or metal implants, they are not given iontophoresis treatment. The doctor would then suggest other options. If the patient is able to undergo the treatment then it would help to apply petroleum jelly on any cuts or scrapes in the skin before beginning the treatment.