According to WebMD, excessive sweating, or hyperhidrosis, can be treated with a prescription or over-the-counter antiperspirant. This is the easiest treatment method. The antiperspirant is applied directly to the skin at least twice a day, morning and night, to all areas that require it, including the hands, feet and hairline.
Medscape states that topical medications, such as boric acid, Drysol, anticholinergics and glutaraldehyde, can be effective, but they usually require a doctor's prescription and can cause irritation, staining and other unwanted effects.
International Hyperhidrosis Society warns against a long-term treatment plan using oral medications due to side effects. Iontophoresis, a process in which an affected person's hands and feet are submerged in water and a low-level electrical current is conducted through the water to the skin's surface, is very effective in treating hyperhidrosis of the hands and feet with more than a 80 percent success rate. This treatment is not recommended for use for underarm hyperhidrosis. It can be performed at home using an in home device.
WebMD states that botulinum toxin or Botox injections are FDA approved for the treatment of underarm hyperhidrosis. They work by blocking the release of a chemical that causes the sweat glands to begin working. The effects can last up to a year but require multiple treatments before results become apparent.
Surgery is a last resort for dealing with hyperhidrosis, notes WebMD. It involves cutting, scraping or suctioning out the sweat glands or cutting the nerves responsible for activating the sweat glands.