Why Eczema Flares in Winter: The Science

Eczema, or atopic dermatitis, is a chronic skin condition linked to a defective skin barrier and an overactive immune system. When your skin is exposed to cold, dry air, it loses moisture quickly—this is known as transepidermal water loss (TEWL).

According to a study published in European Academy of Dermatology and Venereology, TEWL significantly increases during winter months, especially in individuals with pre-existing eczema, leading to worsening symptoms like itching, cracking, and inflammation.

Cold weather also means:

• Indoor heating systems dry the air further
• Hot showers strip natural oils from the skin
• Low UV exposure suppresses skin healing
• Tight winter clothing increases friction and irritation

U.S. Winter Climate Hotspots for Eczema Sufferers

Some U.S. regions are particularly harsh on eczema-prone skin due to their winter climate:

• Northeast & Midwest: Low humidity, sub-freezing temps, and forced-air heating make cities like Chicago, Minneapolis, and Boston eczema hotspots in winter.
• Mountain West: Places like Denver and Salt Lake City combine cold with high altitude, creating extremely dry conditions.
• Southwest deserts: Even with mild winter temps, areas like Arizona and Nevada stay very arid year-round, causing persistent skin dehydration.

While coastal regions (like the Pacific Northwest or parts of the Southeast) retain more moisture, indoor heating still plays a role in winter flares nationwide.

Signs Your Eczema Is Triggered by Winter

You may be dealing with cold-weather eczema if:

• You notice increased flaking, redness, or itchiness in late fall or winter
• Your symptoms are worse after showers or time spent indoors
• Your skin feels tight or stings after cleansing
• Your eczema appears more often on hands, arms, legs, or face—areas frequently exposed to dry air

How to Protect Your Skin During Dry Winters

1. Switch to a Winter Moisturizer

Lighter lotions don’t cut it when the air is dry. Use a thick, fragrance-free emollient like NellaDerm’s NellaCalm cream, which contains barrier-repairing ingredients.

Apply immediately after showering—within 3 minutes—to trap moisture in your skin.

2. Use a Humidifier at Home

Indoor humidity often drops below 20% in winter—far below the recommended 40–60% for healthy skin. Combat this with a cool-mist humidifier, especially in bedrooms while you sleep.

Learn more about this topic in our related post: Can Humidifiers Help Eczema? What Dermatologists Say.

3. Shower Smart

Hot water strips skin’s natural oils. Stick to:

• Lukewarm water (not hot)
• Showers under 10 minutes
• Soap-free, fragrance-free cleansers

Avoid rough towel-drying—pat skin gently dry and apply moisturizer right away.

4. Protect Your Hands and Face

Hands are often hit hardest in winter. Wear gloves outside, and moisturize frequently after washing. For facial eczema, apply a protective layer before stepping out into the cold.

If you use facial masks for PPE, check out our full guide on how to avoid eczema flare-ups under masks.

5. Watch Your Laundry Routine

Winter means bulkier clothes, synthetic fabrics, and indoor allergens. Use hypoallergenic detergent and skip dryer sheets. If your eczema gets worse after wearing certain sweaters or scarves, opt for cotton layers instead of wool or polyester.

Final Thoughts

Winter in the U.S. brings its share of beauty—snowflakes, cozy sweaters, and hot drinks. But for people with eczema, it also brings cracking skin, relentless itching, and discomfort. The good news? With the right adjustments to your skincare and environment, you can make winter much more bearable.

Start by prioritizing moisture, avoiding common irritants, and supporting your skin barrier daily. And when in doubt, lean on eczema-safe products, such as those offered at NellaDerm.com, crafted specifically to soothe and protect sensitive skin in every season.

Table of Contents

• Why Eczema Flares in Winter
• U.S. Winter Hotspots
• Signs of Winter Eczema
• Winter Protection Tips
• Final Thoughts