Types

Understanding Hyperhidrosis

Choose a preferred language

Hyperhidrosis is excessive sweating. It’s often an ongoing (chronic) condition. Sweating is a normal process. It helps manage body temperature and other processes of the body. But excessive sweating is more sweating than is needed to do this. The symptoms can start when you’re a child and continue into adulthood.


 How to say it

hi-per-hi-DROH-sihs


What causes hyperhidrosis?

In most cases, the cause isn’t known. It may be because of a problem with how the nervous system responds to stress. In some cases, it may be caused by another health condition or a medicine. This is known as secondary hyperhidrosis.


Symptoms of hyperhidrosis

The main symptom of hyperhidrosis is heavy sweating that:

  • Can cause problems with daily activities and social events.

  • Happens during the day but not at night.

  • May happen with no physical activity.

The sweating occurs most often in any or all of these areas:

  • Bottoms of the feet

  • Palms

  • Underarms

In some cases, it may also occur in these areas:

  • Face

  • Groin

  • Scalp

  • Under the breasts


Treatment for hyperhidrosis

Treatment choices include:

  • Antiperspirant. The main ingredient in antiperspirant is aluminum chloride, which can block sweat glands and help stop sweating for a while. You can use antiperspirant on your underarms, hands, feet, back, and groin areas. It comes in creams, sticks, gels, and sprays. And you can buy it at a drugstore. It is useful for treating mild hyperhidrosis. Your doctor may prescribe a stronger antiperspirant that has more aluminum chloride, if needed. Apply antiperspirant to dry skin at night before bed. Apply it every night for 1 to 2 weeks, and then once or twice a week or as needed. This can irritate the skin for some people.

  • Botulinum toxin. This is a type of medicine that is injected into the areas with sweat glands. This medicine temporarily blocks a chemical that stimulates the sweat glands. You’ll need to get injections every 4 to 6 months.

  • Iontophoresis. This treatment uses electricity to block sweat glands. Moist pads are put on the skin, or your hands or feet are placed in shallow water. Chemicals may be added to the water. An electrical current is sent through fluid. The process is done several times a week until sweating is reduced, and then once a week or as advised.

  • Surgery. In severe cases, you may have surgery to remove your sweat glands. Or surgery can be done to cut the nerves that send signals to the sweat glands. Either of these types of surgery can stop sweat forever. The most common side effect is compensatory hyperhidrosis. This means that while you will no longer sweat from the area where you had surgery, your body will make up for it by sweating in other areas.

  • Microwave thermolysis. This procedure is done in your doctor's office. Your doctor uses a device that destroys sweat glands in your underarms with heat. Results are usually seen within 1 to 2 office visits.

  • Medicated gels or cloths. You use these in your underarms. They reduce how much sweat your body can make.

  • Treating another health condition, or changing a medicine. A health condition or a medicine can cause secondary hyperhidrosis. This can be managed by treating the health condition or by changing the medicine. Your doctor will talk with you about these choices.

  • Oral medicines. These are medicines that can be taken by mouth. They work throughout your body to help reduce sweating.


Possible complications of hyperhidrosis

You may have skin problems in the areas where you sweat. The skin may become moist, pale, swollen, and soft enough to rub away easily. This is known as skin maceration. It can lead to loss of skin, pain, and skin infection. You can help prevent this problem by treating your hyperhidrosis and keeping your skin dry as much as possible.


Living with hyperhidrosis

Hyperhidrosis may be caused by or made worse by emotional stress and heat. It can cause problems with work and social life. You may have stains on your clothes and not want to shake hands with people. It can be upsetting to cope with the problems of excess sweat. Talk with your doctor about:

  • Support groups.

  • How to prevent skin maceration.

  • Other ways to manage your condition long-term.


When to contact your doctor

Contact your doctor or get medical care right away if you have:

  • Symptoms that don’t get better, or get worse.

  • New symptoms.

Author: Wheeler, Brooke

© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

Start your journey toward better health

Select a primary care physician who will deliver personal care, close to home.

Find a Doctor

We have more than 4,500 specialty care physicians in our network

We have you covered from head (neurosurgery) to toe (podiatry.) And everything in-between!

Find a Doctor

Need Help?

Get the right care at the right time.

Learn More
Related Articles
Read article
Skin Health
Tinea Infection

Detailed information on the most common types of ringworm, including diagnosis and treatment

Read article
Skin Health
Understanding Folliculitis

Folliculitis is a skin condition that affects the hair follicles. It's often found on the neck, face, and scalp. Learn about causes, symptoms, and treatment.

Read article
Skin Health
Head Lice

Head lice are tiny insects that infect the scalp. They make your scalp feel very itchy. Lice lay eggs that are called nits. They look like tiny white specks stuck to your hair. Read on to learn how to get rid of head lice.

Read article
Skin Health
Seborrheic Dermatitis

Here is detailed information on seborrheic dermatitis, including symptoms, diagnosis, and treatment.