Most sweating is normal. It's how your body cools down during heat, exercise, and stress. It's worth seeing a doctor if your sweating is heavy enough to disrupt daily life, happens without an obvious reason, starts suddenly, affects your whole body, mostly happens while you sleep, or comes with symptoms like fever, weight loss, a racing heart, or chest pain. A clinician can work out what's behind it and recommend the right next step.

Signs it's time to talk to a doctor

Book an appointment if any of these sound familiar:

• Sweating regularly gets in the way of work, school, or social plans.
• You sweat heavily when you're cool and resting.
• Your sweating pattern has changed suddenly, or started later in life.
• You sweat across your whole body rather than in specific areas.
• You often wake up soaked.
• Sweating started after a new medication.
• It comes with fever, unexplained weight loss, a racing heartbeat, shakiness, or chest pain.

Seek urgent care if heavy sweating comes with chest pain, shortness of breath, lightheadedness, or nausea.

Primary and secondary hyperhidrosis

Doctors generally describe two types of excessive sweating, or hyperhidrosis.

Primary focal hyperhidrosis isn't caused by another health problem. It usually affects specific areas, such as the underarms, palms, soles of the feet, or face, often starts in childhood or the teen years, and tends to run in families.

Secondary hyperhidrosis is linked to something else, such as a medical condition, hormonal changes, or a medication. It's more likely to affect the whole body and to start in adulthood, and it's the type most likely to need a medical workup.

How doctors diagnose excessive sweating

A diagnosis usually starts with a conversation. Your doctor will ask where you sweat, when it started, what triggers it, whether it happens during sleep, any medications you take, and how it affects your daily life. It helps to note these details before your appointment.

Your doctor may also suggest:

• Blood or urine tests to check for conditions that can cause sweating, such as a thyroid issue or low blood sugar.
• A starch-iodine test, where iodine is painted on the skin and dusted with starch. Areas that sweat turn dark blue, showing exactly where and how much you sweat.
• A paper test, where special paper is placed on the skin to absorb and measure sweat.

You might start with your primary care provider, who can refer you to a dermatologist if needed.

Common triggers

Anything that raises your body temperature or switches on your stress response can make you sweat more: hot weather, exercise, spicy food, caffeine, alcohol, and nerves. Some medical conditions, including thyroid conditions and diabetes, as well as menopause and certain medications, can also cause heavier sweating. If you're not sure why you're sweating more, a doctor can help sort it out.

Treatment options

Treatment depends on the type of sweating and what's causing it. If an underlying condition or medication is responsible, your doctor will focus on that. For primary hyperhidrosis, common options include:

• Topical antiperspirants, usually the first step. Many contain aluminum-based actives, such as aluminum chloride.
• Prescription options, including prescription-strength topicals and oral medications.
• Iontophoresis, often used for hands and feet.
• Botulinum toxin injections, which can reduce sweating in treated areas for several months and need to be repeated.
• Procedures and surgery, generally reserved for severe cases after other options have been tried.

Heavy sweating can also lead to skin issues such as heat rash or infections in skin folds, so it's worth raising with your doctor if you notice these.

Everyday sweat care

Whether or not you have a diagnosis, a dependable topical routine can help you feel more at ease day to day. Our Clinical Sweat Control Stick provides daily underarm sweat and odor protection. For heavier underarm sweating, the Intensive Sweat Minimizing Gel is applied at bedtime to clean, completely dry underarms and washed off in the morning, so you sweat less during the day. Together with our Deep Clean Body Wash, they make up the Sweat Control Trio. If you're under a doctor's care, keep following their advice.

Your next step

If any of the signs above apply to you, book an appointment and bring notes on where, when, and how much you sweat. If your sweating is mostly in the everyday range, find your sweat care routine.