Can Climate Change Worsen Eczema?
Eczema, also known as atopic dermatitis, is a chronic inflammatory skin condition that affects millions of people worldwide. It causes symptoms like dry skin, redness, itching, and rashes. Many factors influence eczema flare-ups, from genetics and immune system function to skincare routines and lifestyle habits. But one question is becoming increasingly relevant in our changing world: Can climate change worsen eczema?
The short answer: yes, environmental changes—driven in part by climate change—can exacerbate eczema. Understanding how this happens can help you manage symptoms and adapt your skincare and lifestyle routines effectively.
How Climate Affects Eczema
Eczema is highly sensitive to environmental conditions. Certain weather patterns and environmental changes can trigger flare-ups:
1. Temperature Extremes
-Hot weather: Increases sweating, which can irritate the skin and worsen itching. High temperatures can also dry out the skin by accelerating water loss.
-Cold weather: Cold air tends to be dry, stripping the skin of moisture. Indoor heating during winter can further dehydrate skin, worsening eczema.
2. Humidity Levels
-Low humidity: Dry air removes moisture from the skin barrier, making it more prone to cracks, irritation, and infection.
-High humidity: While some moisture is helpful, excessive humidity can encourage sweat, heat rash, and fungal overgrowth, which can aggravate eczema.
3. Air Pollution
Research increasingly links air pollution to skin inflammation. Particulate matter, chemicals, and ozone exposure can:
-Trigger immune responses in the skin
-Worsen itchiness and redness
-Exacerbate flare-ups in children and adults alike
Climate Change and Eczema: The Connection
Climate change intensifies many of the environmental triggers that affect eczema:
1. Rising Global Temperatures
Hotter average temperatures can increase sweating, dehydration, and skin barrier stress. People with eczema are more sensitive to these changes, making them prone to flare-ups during heatwaves or prolonged hot seasons.
2. More Extreme Weather Events
-Heatwaves and cold snaps create sudden environmental stress on the skin.
-Droughts lower ambient humidity, increasing skin dryness and cracking.
-Flooding and storms can increase exposure to mold, bacteria, and irritants, which may trigger eczema flare-ups or secondary infections.
3. Air Pollution from Climate-Driven Events
Wildfires and industrial emissions are more frequent due to climate change. Smoke, ash, and airborne pollutants irritate the skin and respiratory system, worsening eczema and related allergic conditions.
4. Longer Pollen Seasons
Climate change is extending the length of pollen seasons, particularly in areas with rising temperatures. For people with eczema and allergies, longer exposure to pollen can increase inflammation, itching, and flare frequency.
The Science Behind Environmental Triggers
Eczema involves a weakened skin barrier and an overactive immune response. Environmental stressors make this worse:
-Dry air and low humidity strip lipids from the skin barrier, allowing irritants and allergens to penetrate.
-Heat and sweat trigger inflammatory pathways, increasing redness and itchiness.
-Pollutants can produce oxidative stress in skin cells, activating the immune system and worsening eczema lesions.
In short, climate-related changes directly impact the two core problems in eczema: barrier dysfunction and inflammation.
Practical Tips for Protecting Your Skin in a Changing Climate
Even as global temperatures and environmental stressors increase, there are strategies to minimise flare-ups:
1. Moisturise Religiously
-Use thick, fragrance-free emollients multiple times a day, especially after bathing.
-Ointments and creams are often better than lotions for barrier repair.
2. Adjust Your Skincare Routine Seasonally
-In dry winter months, use heavier moisturizers and limit hot showers.
-In hot, humid summer months, shower promptly after sweating and pat skin dry gently.
3. Limit Exposure to Pollutants
-Stay indoors on days with high air pollution or wildfire smoke.
-Use air purifiers at home to reduce indoor irritants.
-Wash face and hands after outdoor exposure to reduce pollutant contact.
4. Wear Protective Clothing
-Loose, breathable fabrics help prevent overheating and reduce sweat irritation.
-Layer clothing in cold climates to prevent dry, exposed skin.
5. Monitor Local Weather and Pollen Counts
-Be proactive by adjusting skincare and protective measures when extreme temperatures or high pollen levels are expected.
6. Support Skin Barrier from the Inside
-Stay hydrated and consume anti-inflammatory foods to help your skin cope with environmental stress.
-Supplements like omega-3s may support barrier function, though consult your doctor first.
Looking Ahead: Climate Change and Chronic Skin Conditions
As climate change continues, dermatologists anticipate:
-Increased prevalence of eczema and other inflammatory skin conditions
-More severe and frequent flare-ups
-Higher healthcare burdens and need for preventive strategies
Understanding the environmental component of eczema is critical—not only for individual management but also for public health planning. People with eczema will need to adapt their routines, monitor triggers closely, and advocate for clean air and climate-conscious policies.
The Takeaway
Yes—climate change can worsen eczema, but knowledge is power. By understanding how temperature, humidity, pollution, and pollen affect your skin, you can take proactive steps to protect your skin barrier, minimise flare-ups, and maintain comfort year-round.
Eczema management is more than creams and medications; it’s about adapting to your environment—especially in a world where climate change is altering weather, air quality, and allergens.
Key Actions:
-Moisturise consistently
-Protect skin from temperature extremes and pollutants
-Monitor local environmental triggers
-Maintain a barrier-friendly skincare routine
With awareness and proactive care, you can stay ahead of flare-ups—even as the climate changes around you.
