Sweating is a natural process with an important job — to keep you from overheating. For some people with psoriasis, though, sweating might seem to make their psoriasis symptoms worse.

“It’s hot and sweaty today, so the psoriasis is really acting up behind my ears,” one MyPsoriasisTeam member said.

“Sweat means psoriasis plaques for me!” another member commented.

In this article, we look closer at sweating — what causes it, how it might affect psoriasis symptoms, and how to manage it.

The Purpose of Sweating

Sweating allows your body to regulate its temperature. You sweat, or perspire, when blood vessels in the skin bring body heat to the surface. This prompts your sweat glands to release water, which evaporates off your skin.

The evaporation cools your body and keeps your body temperature at a healthy level. Most people have about 2 million to 4 million sweat glands.

In addition to water, sweat contains electrolytes, including sodium, potassium, magnesium, and calcium.

Causes of Sweating

Hot weather and vigorous exercise might first come to mind as causes of sweating, but you can sweat for other reasons. Some triggers include:

• Hot weather
• Exercise
• Nervousness
• Fever or illness
• Medications
• Hot or spicy foods
• Hormone changes
• Cancer treatment
• Menopause

Some researchers suspect that immune-related conditions like psoriasis and psoriatic arthritis can raise body temperature and trigger excessive sweating, but more studies are needed to confirm a connection and establish a scientific explanation.

Some MyPsoriasisTeam members report sweating as a side effect of their psoriasis medications. “Today, the sweats are bad with the methotrexate,” said one MyPsoriasisTeam member. Another member said, “My dermatologist prescribed a face cream, and it makes my face sweat.”

Talk to your doctor if you experience sweating as a side effect of your psoriasis treatment.

Does Heat Make Psoriasis Worse?

“The heat and sweat make my psoriasis itch worse,” said a MyPsoriasisTeam member who has scalp psoriasis. Another said, “It has been really hot lately, and my skin seems to be worse when I sweat.”

People with psoriasis react differently to hot, sweaty temperatures. For the members above, it can trigger a flare-up. Other members find the cold weather is the bigger problem: “It’s been so cold lately. I’m getting really dry arms and legs.”

“It has been really hot lately, and my skin seems to be worse when I sweat.”
— A MyPsoriasisTeam member

Psoriasis flares can cause symptoms such as:

• Itching
• Burning
• Soreness
• A patchy rash with silvery scale
• Scaling that looks like dandruff
• Dry skin that cracks or bleeds

How Does Sweat Affect Psoriasis?

Sweating may cause more problems for people with specific types of psoriasis, such as inverse psoriasis. This type of psoriasis usually appears as lesions that may look shiny or smooth and be a different color than the surrounding skin.

Inverse psoriasis can develop wherever there are skin folds, including the armpits, groin, and genitals and beneath the breasts. It’s more common in people who have deep skin folds.

Sweating can worsen inverse psoriasis because of where the lesions occur. When you sweat, your skin gets slicker. This makes it easier for skin folds to rub together and irritate psoriasis lesions.

Not only can this moisture worsen psoriasis, but it also can provide an environment for yeast and fungus to grow. Sweat can also make medicated creams slip off the skin.

Ways To Manage Sweating

Talk to your doctor about psoriasis and sweating. Some people find it helps to keep a symptom journal to document flare-ups as they happen instead of relying on memory. You can bring the journal or notebook with you to appointments.

Medications

If you sweat excessively — a condition called hyperhidrosis — your doctor might recommend:

• A topical lotion, ointment, or cream containing aluminum chloride that clogs sweat glands
• An aluminum-based antiperspirant combined with an oral anticholinergic medication (a drug that blocks the activity of acetylcholine, a brain chemical)
• Prescription-strength topical treatments
• Prescription systemic medications including beta-blockers

Before taking any medications for sweating, ask your healthcare provider about the risks and side effects. Many people can manage sweating with lifestyle changes alone.

Lifestyle Changes

In a study published in the British Journal of Dermatology, researchers found that sleep and cold showers were two of the most successful methods for alleviating itching in participants with psoriasis.

If you can avert the itching by reducing how much you sweat, that’s even better. These lifestyle changes might help with sweating:

• Wear loose-fitting clothes made from breathable fabric like cotton.
• Sit in front of a fan on warm days.
• Go swimming. (Be sure to reapply sunscreen after you dry off — sunburn can trigger psoriasis too.)
• Exercise during the coolest part of the day.
• Seek shade if you have to be outdoors on a hot day.

Although you may be tempted to crank up the air conditioning to reduce sweating, the chilled air can cause dry skin, which can also trigger a flare-up.

“My scalp psoriasis gets itchier in the summer months. My solution is to shower after gardening and mowing and use a gentle shampoo.”
— A MyPsoriasisTeam member

The American Academy of Dermatology recommends applying moisturizing cream throughout the day if you have psoriasis and spending time in an air-conditioned home or building.

Advice From Others

MyPsoriasisTeam members have discussed strategies to manage sweating.

“My scalp psoriasis gets itchier in the summer months because I’m outside more and wearing a hat, which makes my head sweat,” one member said. “Then the sweat makes my scalp itch. My solution is to shower after gardening and mowing and use a gentle shampoo.”

Other member tips include:

• “I shower right after I sweat.”
• “Gentle exercise, drinking lots of fluids, and an anti-inflammatory diet helps me.”
• “I take an Epsom salts bath.”
• “I usually sleep with my hair up and a window cracked or the fan on.”
• “I try to skip the peak heat hours.”

You may need to test a few approaches to find the best way to manage sweating and ease your psoriasis symptoms.

Before trying any skin care or other at-home psoriasis tips you find online, seek medical advice from a healthcare professional. For sweating and psoriasis, a doctor specializing in dermatology may be your best resource.

Talk With Others Who Understand

On MyPsoriasisTeam, people share their experiences with psoriasis and psoriatic arthritis, get advice, and find support from others who understand.

Does sweating make your psoriasis symptoms worse? Let others know in the comments below.