Why Eczema Gets Worse in Summer and How to Manage It

Summer in Idaho means long days at Lucky Peak, hiking in the foothills, floating the river, and backyard BBQs. But for those living with eczema, the rising temperatures often bring more than just sunshine. They often bring a frustrating increase in itchy, inflamed flare-ups. If your skin feels like it’s constantly fighting the summer heat, you aren’t alone. Understanding your seasonal triggers is the first step toward reclaiming your summer comfort.

At Mountain Pine Dermatology, we help patients across Meridian and surrounding areas manage eczema year-round. The good news is that once you understand what’s triggering your skin, you can take steps to reduce flare-ups and stay comfortable all summer long. Let’s take a closer look at what’s actually causing these summer flare-ups. 

Eczema, also known as atopic dermatitis, is a condition that affects the skin barrier. During the summer, several environmental factors can weaken that barrier even more, leading to increased inflammation, dryness, and itching. 

Heat and Sweat

• Irritation and Itching: Sweat acts as a major trigger for eczema
• Flare Zones: As the body cools, the salt in sweat irritates sensitive skin, while trapped moisture in areas like elbows and behind the knees leads to inflammation

Sun Exposure and Skin Barrier Damage

• Inflammation: Sunburns directly damage an already compromised skin barrier
• Triggering Flares: Even mild sun exposure can raise skin temperature enough to trigger a painful inflammatory response

Chlorine, Sunscreen, and Irritants

• Drying Effects: Chlorine in swimming pools strips natural oils, leaving skin vulnerable and dry
• Contact Reactions: Certain sunscreens contain fragrances or preservatives that may trigger dermatitis

Some eczema triggers aren’t as obvious but can still play a big role in flare-ups during the summer. 

• Tight or Sweaty Clothing: Synthetic fabrics can trap sweat against the skin and cause mechanical friction during outdoor activities
• Dehydration: When your body lacks water, your skin barrier becomes more brittle and prone to cracking
• Over-showering: Frequent long or hot showers can strip away essential protective lipids 
• Environmental Factors: Increased exposure to allergens like grass, pollen, and dust can irritate skin conditions

Managing eczema in the summer is all about protecting your skin barrier and minimizing irritation. A few simple adjustments can make a noticeable difference. 

• Lightweight, Fragrance-Free Moisturizers: Swap heavy creams for lighter lotions that hydrate without feeling greasy in the heat
• Choosing Mineral Sunscreen: Look for physical blockers like zinc oxide or titanium dioxide, which are typically less irritating for sensitive skin.
• Wearing Breathable Fabrics: Opt for loose cotton or linen to allow the skin to breathe
• Staying Hydrated: Drink plenty of water to support your skin’s health from the inside out

After a long day outside, how you care for your skin can make a big difference in preventing a flare-up. Sweat, sunscreen, and environmental irritants can sit on the skin longer than you realize, continuing to trigger inflammation even after you’ve cooled down.

Taking a quick lukewarm rinse after swimming, exercising, or spending time in the sun helps remove those irritants before they cause problems. The goal is not to shower more often, but to rinse off gently and avoid letting sweat sit on the skin for extended periods.

Avoid hot water and long showers, which can strip away your skin’s natural oils and worsen dryness. Instead, keep it short, use a gentle cleanser when needed, and follow up with a fragrance-free moisturizer while your skin is still slightly damp.

Consistency matters more than perfection. A simple, gentle routine is often the most effective way to keep eczema under control. 

Even with a solid routine, some eczema cases need more than over-the-counter care. If your symptoms are persistent or worsening, it may be time to see a dermatologist.  You should seek professional help if you experience:

• Persistent Itching: Itching that disrupts your daily life or sleep
• Cracked or Infected Skin: Any signs of oozing, yellow crusting, or deep, painful cracks.
• Frequent Flare-ups: Reactions that continue despite a steady management routine.

Early treatment can prevent complications and help you regain control of your skin faster.

At Mountain Pine Dermatology, we provide a whole-patient approach to eczema treatment. Our team offers personalized care plans tailored to your specific triggers and lifestyle.

Don’t let an eczema flare-up keep you from enjoying everything an Idaho summer has to offer. Mountain Pine Dermatology proudly serves patients in Meridian, Caldwell, Emmett, Mountain Home, and Baker City with expert, compassionate dermatologic care. If you’re struggling with eczema flare-ups, our team is here to help.

Call (208) 898-7467 or schedule your appointment online today to get started with a personalized eczema treatment plan.