What is hyperhidrosis?

Hyperhidrosis is a medical condition that causes excessive sweating.

Sweating is a natural process that cools the body and prevents overheating. However, people with hyperhidrosis sweat more than is necessary, even when the body does not need cooling.

Most people with hyperhidrosis sweat from one or two areas of the body, such as their palms, feet, underarms, or head. While the rest of the body remains dry, one or two areas may drip with sweat.

This excessive sweating can interfere with everyday activities. For example, hands can be so sweaty that it becomes difficult to turn a doorknob or use a computer. Sweat from the underarms often soaks through clothes, causing obvious sweat marks. Because the skin is often wet, skin infections can develop.

Hyperhidrosis treatment

The treatment for hyperhidrosis depends on the type of hyperhidrosis and where the excessive sweating occurs on the body. Your dermatologist also considers your overall health and other factors.

Dermatologists use a variety of treatments to help their patients control hyperhidrosis, including:

• Antiperspirants: This may be the first treatment that a dermatologist recommends. When applied as directed, an antiperspirant can be effective. Your dermatologist may recommend a regular or clinical-strength antiperspirant. Some patients need a stronger antiperspirant and receive a prescription for one. The antiperspirant sits on top of your skin. As you sweat, the antiperspirant is pulled into your sweat glands. This plugs the sweat glands. When your body senses that its sweat glands are plugged, this should signal your body to stop producing so much sweat. Some people may develop a burning sensation or irritated skin where they apply the antiperspirant. If these occur, be sure to tell your dermatologist. Changing how you use the antiperspirant can reduce these side effects.

• Iontophoresis: If you experience excessive sweating in your hands, feet, or both areas, there is a treatment option that you can use at home. This treatment involves immersing your hands or feet in a shallow pan of tap water while a medical device sends a low-voltage current through the water. Many people have found relief with this treatment, but some people find it time-consuming.

• Botulinum toxin injections: To address excessive sweating, a dermatologist can inject a diluted form of this medication into your underarms. The treatment involves injecting small amounts of the medication in multiple areas of the underarms. When administered correctly, patients typically experience minimal pain or discomfort.