When to seek care for sweating excessive

Overview

Excessive sweating, also called hyperhidrosis, is when you sweat much more than your body needs to cool down. It can happen all over the body or just in certain areas like the hands, feet, underarms, or face.

Yes, excessive sweating is quite common. It affects about 1 in 20 people worldwide. Many people do not seek help because they are embarrassed, but help is available.

It can affect people of all ages, but often starts in childhood or around puberty. Both men and women can have it. It may run in families.

Symptoms

Common symptoms

• Sweating that is much heavier than normal for the temperature or activity level.
• Sweat that soaks through clothes or drips off the body.
• Sweating that happens even when you are resting or cool.
• Sweating in specific areas like palms, soles, underarms, or face.

Symptoms in children

• Sweating that makes the child's hands or feet feel wet or clammy.
• Difficulty holding objects because of sweaty hands.
• Clothes getting wet quickly during normal activities.

Symptoms in older adults

• Sudden or new onset of heavy sweating that is not related to exercise or heat.
• Sweating at night that soaks sheets and pajamas.
• Sweating accompanied by other symptoms like chest pain, shortness of breath, or dizziness.

Causes

Main causes

• Primary hyperhidrosis: This is the most common type. It has no clear medical cause and often starts in childhood or adolescence. It is thought to be related to overactive sweat glands due to the nervous system being too sensitive.
• Secondary hyperhidrosis: This type is caused by an underlying medical condition or trigger, such as an overactive thyroid, infections, menopause, certain medications, or low blood sugar.

Risk factors

• Family history: Excessive sweating often runs in families.
• Certain medical conditions like diabetes, thyroid problems, or obesity.
• Taking certain medications that can cause sweating as a side effect.
• Hormonal changes, such as those during menopause or pregnancy.

When to see a doctor

See a doctor urgently if:

• If excessive sweating happens suddenly and is accompanied by chest pain, shortness of breath, or feeling faint – seek emergency care.
• If you have night sweats that are severe and come with fever, weight loss, or a cough that does not go away – see a doctor urgently.

Book a routine appointment if:

• If sweating is affecting your daily life, making you feel embarrassed, or causing you to avoid social situations.
• If you have tried home remedies and they are not helping.
• If you notice sweating that started recently or is getting worse without an obvious reason.

Diagnosis

A doctor will start by asking about your medical history and doing a physical exam. They may ask about when the sweating started, where it occurs, and if you have other symptoms. They might also ask about your family history.

Tests that may be done

• Starch-iodine test: A dye is applied to the sweating area, and then a starch powder is sprinkled. The dye turns dark blue where sweat is present, showing the areas of excessive sweating.
• Thermoregulatory sweat test: A powder that changes color when wet is applied to the skin, and the person is placed in a room that raises body temperature to trigger sweating. This helps see patterns of sweating.
• Blood tests: To check for underlying conditions like thyroid problems or infection.

What to expect at your appointment

The doctor will work to understand the cause of your excessive sweating. They may refer you to a specialist, such as a dermatologist (skin doctor) or an endocrinologist (hormone doctor), depending on what they find. The process is usually straightforward and can help guide the best treatment for you.

Treatment

Treatment for excessive sweating depends on the cause and severity. Many options can help reduce sweating and improve comfort. Your doctor can help you choose the best approach.

Self-care at home

• Use over-the-counter antiperspirants (not deodorants) on the affected areas. Apply at night for best results.
• Keep cool by using fans, air conditioning, and wearing loose, breathable clothing made of natural fibers like cotton.
• Avoid triggers like spicy foods, caffeine, and alcohol, which can make sweating worse.
• Manage stress with relaxation techniques like deep breathing, meditation, or yoga.

Medical treatments

If self-care is not enough, a doctor may recommend prescription-strength antiperspirants, medications that reduce sweating (such as anticholinergics, but not named), or procedures like iontophoresis (using a mild electrical current to reduce sweat gland activity). Botulinum toxin (Botox) injections can also be used to block sweat gland signals in specific areas. These treatments are generally safe and effective, but you should discuss the benefits and risks with your doctor.

When is surgery considered?

In severe cases that do not respond to other treatments, surgery may be an option. One procedure is called endoscopic thoracic sympathectomy (ETS), which cuts or clamps nerves that trigger sweating in the hands or face. However, surgery carries risks and is not recommended for everyone. Discuss thoroughly with a specialist.

Living with this condition

Living with excessive sweating can be challenging, but there are many ways to manage it. You can plan ahead by carrying extra clothes, using absorbent pads, or wearing dark colors to hide sweat marks. It is important to know that you are not alone and that support and treatments are available.

Lifestyle tips

• Wear moisture-wicking fabrics or carry a small towel or handkerchief.
• Use absorbent shoe insoles or foot powder to keep feet dry.
• Practice good hygiene to prevent skin infections from moisture.
• Consider using a handheld fan or cooling spray in hot situations.

Diet and exercise

Stay hydrated by drinking plenty of water, especially if you sweat a lot. Some people find that avoiding spicy foods, caffeine, and hot beverages helps reduce sweating. Regular exercise can help lower stress and improve your overall health, but be sure to shower and dry off afterward.

Mental health and emotional wellbeing

Excessive sweating can cause embarrassment, anxiety, and social withdrawal. It is normal to feel self-conscious. Talking to a mental health professional can help you cope with these feelings. Cognitive behavioral therapy (CBT) can be effective in reducing anxiety about sweating.

Prevention

Primary hyperhidrosis cannot be prevented since its cause is not fully understood. However, you can reduce triggers and manage symptoms with lifestyle changes and treatments. Secondary hyperhidrosis may be prevented by managing underlying conditions like thyroid problems or avoiding known triggers.

Complications

If left untreated

• Skin infections like fungal or bacterial infections due to constant moisture.
• Social anxiety or depression from embarrassment or avoiding social situations.
• Difficulty at work or school, especially if hands are sweaty and interfere with tasks.
• Dehydration or electrolyte imbalances in severe cases.

Long-term outlook

With the right treatment and support, most people with excessive sweating can manage their symptoms and lead a normal, active life. Treatments have improved greatly in recent years, so there is reason to be hopeful. Even if the sweating does not completely go away, you can find ways to feel more comfortable and confident.

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