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The Root Causes of Eczema and How Functional Medicine Can Help

For millions of people, eczema isn’t just a skin issue—it’s an ongoing battle with itching, redness, and inflammation that can make even daily activities uncomfortable. More than 30 million Americans deal with some form of eczema, and for many, the condition starts in childhood and persists into adulthood.

Eczema, also known as atopic dermatitis, is not contagious, but it’s complex. Researchers have found that it often runs in families with allergies or asthma, but genetics alone aren’t the only factor. The immune system, environmental triggers, and even gut health all play a role.

Conventional treatments like steroids and medicated creams can provide relief, but they don’t address the root cause. This is where functional medicine comes in. Instead of just treating symptoms, functional medicine looks deeper—identifying food sensitivities, toxins, stress, and internal inflammation that may be triggering eczema.

Understanding the Causes of Eczema

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Eczema isn’t caused by just one thing. It develops from a combination of genetics, environmental factors, and immune system imbalances. While some people may have a family history of eczema, others develop it due to lifestyle and environmental triggers. Let’s break down the main causes.

 

Eczema often runs in families. If a parent or sibling has eczema, asthma, or allergies, there’s a higher chance of developing it. This is because certain genes, like the filaggrin (FLG) gene, play a key role in maintaining the skin’s protective barrier. When this gene is faulty, the skin loses moisture more easily, making it dry, irritated, and more prone to allergens and bacteria.

 

People with eczema have a weakened skin barrier, which makes them extra sensitive to external irritants, such as:

  • Harsh soaps and detergents
  • Fragrances and chemicals in skincare products
  • Tobacco smoke and air pollution
  • Extreme weather (cold, dry air or hot, humid conditions)
  • Dust mites, pet dander, pollen, and mold

Even something as simple as sweating or wearing wool fabrics can cause an eczema flare-up.

 

Eczema is linked to an overactive immune response. When the immune system mistakenly reacts to harmless substances—like pollen, certain foods, or stress hormones—it causes inflammation in the skin, leading to redness, itching, and irritation.

Research shows that people with eczema often have higher levels of IgE antibodies, which are associated with allergic reactions. This explains why eczema frequently appears alongside conditions like asthma and hay fever.

 

Emerging research suggests that the gut plays a major role in skin health. A leaky gut or imbalanced gut bacteria can contribute to eczema by increasing inflammation throughout the body. Common food triggers for eczema include:

  • Dairy
  • Gluten
  • Eggs
  • Soy
  • Processed foods and sugar

Some people see significant improvements when they identify and eliminate food sensitivities that trigger their eczema.

 

Stress doesn’t just affect the mind—it impacts the skin, too. High stress levels increase the hormone cortisol, which can weaken the skin barrier and lead to flare-ups. Many people notice their eczema gets worse during times of emotional stress, poor sleep, or hormonal changes (such as pregnancy or menopause).

Eczema is not just a skin condition—it’s a whole-body issue. Genetics, environmental exposures, immune function, gut health, and stress all play a role. Understanding these root causes is the first step toward long-term healing.

Common Triggers and Risk Factors

Eczema flare-ups are not random. They are often triggered by specific factors in the environment or within the body. Identifying and avoiding these triggers can help reduce symptoms and prevent future outbreaks.

 

Many people with eczema also have allergies, which means their immune system reacts aggressively to certain substances. Common allergens that can trigger flare-ups include:

  • Dust mites – Found in bedding, carpets, and upholstered furniture
  • Pollen – Seasonal allergies can worsen eczema
  • Pet dander – Cats and dogs can be major triggers
  • Mold – Often found in damp or poorly ventilated areas
  • Certain foods – Dairy, eggs, soy, nuts, and gluten are common culprits

For some, a reaction happens immediately, while for others, it may take days to see the effects of an allergen on their skin.

 

People with eczema have a weakened skin barrier, making them more sensitive to everyday substances that others can tolerate. Common irritants include:

  • Soaps, shampoos, and body washes – Harsh chemicals strip natural oils from the skin
  • Clothing materials – Wool and synthetic fabrics can cause friction and irritation
  • Household cleaning products – Bleach, detergents, and disinfectants can trigger flare-ups
  • Cigarette smoke – A known eczema irritant

Switching to gentle, fragrance-free, and hypoallergenic products can make a big difference in reducing flare-ups.

 

Stress is one of the biggest yet most overlooked triggers of eczema. When stress levels rise, the body produces more cortisol, a hormone that weakens the skin’s barrier and increases inflammation. Many people notice flare-ups before big events, during work deadlines, or after emotional distress.

Practicing stress management techniques like deep breathing, meditation, and regular exercise can help keep eczema under control.

 

Extreme temperatures and humidity levels can trigger eczema.

  • Cold, dry weather dehydrates the skin, making it itchy and cracked
  • Hot, humid conditions cause excess sweating, which can irritate sensitive skin
  • Sudden temperature changes—such as moving from heated indoor spaces to cold outdoor air—can worsen symptoms

Using a humidifier in dry seasons and wearing breathable fabrics in hot weather can help minimize climate-related flare-ups.

 

Hormonal fluctuations can also affect eczema. Some people notice their symptoms worsen:

  • Before or during menstruation
  • During pregnancy
  • In times of high stress, which impacts hormone levels

Balancing hormones through a healthy diet, good sleep, and stress reduction may help stabilize eczema flare-ups.

Eczema flare-ups don’t happen without reason. Identifying personal triggers—whether allergens, stress, irritants, or climate—can help reduce symptoms and prevent future outbreaks.

Natural Remedies and Lifestyle Modifications

Managing eczema isn’t just about treating flare-ups; it’s about preventing them in the first place. While medications can provide temporary relief, long-term improvement often comes from natural remedies and lifestyle changes that support overall skin health.

1. Dietary Changes: Healing from Within

Food plays a significant role in inflammation, and many people with eczema find relief by adjusting their diet.

  • Eliminate common triggers – Dairy, gluten, eggs, soy, and processed foods are known to cause inflammation in some people. An elimination diet can help identify which foods are causing flare-ups.
  • Increase anti-inflammatory foods – Omega-3 fatty acids (found in salmon, flaxseeds, and walnuts), turmeric, and leafy greens can help reduce inflammation.
  • Support gut health – A healthy gut microbiome is linked to skin health. Eating fermented foods like yogurt, kefir, sauerkraut, and taking probiotics may help balance the gut and reduce eczema symptoms.

2. A Gentle Skincare Routine

The right skincare routine can help repair the skin barrier and prevent irritation.

  • Use fragrance-free, hypoallergenic products – Harsh soaps and lotions with artificial fragrances can strip the skin of moisture.
  • Moisturize frequently – Thick creams or ointments (like shea butter, coconut oil, or petroleum jelly) should be applied immediately after bathing to lock in moisture.
  • Avoid hot showers – Lukewarm water is best, as hot water can dry out the skin and trigger itching.
  • Pat skin dry instead of rubbing – Rubbing with a towel can further irritate sensitive skin.

3. Stress Management: Reducing Triggers from Within

Since stress weakens the immune system and increases inflammation, managing stress is key to controlling eczema.

  • Practice relaxation techniques – Meditation, deep breathing exercises, and yoga can help reduce stress-related flare-ups.
  • Get quality sleep – Poor sleep can increase cortisol levels, worsening eczema. Maintaining a consistent bedtime and using breathable cotton bedding can help.
  • Engage in regular exercise – Physical activity helps regulate stress hormones, but it’s important to shower and moisturize afterward to prevent sweat irritation.

4. Environmental Modifications

A few simple adjustments at home can help minimize eczema triggers.

  • Use a humidifier – Dry indoor air can worsen eczema, especially in winter.
  • Choose soft, breathable fabrics – Cotton is a better choice than wool or synthetic materials, which can cause irritation.
  • Switch to non-toxic cleaning products – Harsh chemicals in detergents, sprays, and surface cleaners can inflame sensitive skin. Opt for natural, fragrance-free alternatives.

5. Natural Remedies for Soothing Eczema

Certain natural treatments have been found to reduce itching and irritation:

  • Oatmeal baths – Colloidal oatmeal has soothing properties that calm inflamed skin.
  • Aloe vera – A natural anti-inflammatory that can provide relief from itching and redness.
  • Chamomile or calendula creams – Known for their skin-calming properties, these plant-based remedies may help reduce irritation.

Healing eczema naturally requires a combination of dietary changes, skincare routines, stress management, and environmental adjustments. While results may take time, these lifestyle modifications can help reduce flare-ups and improve skin health in the long run.

Functional Medicine Approaches to Eczema

Conventional treatments for eczema often focus on suppressing symptoms with creams, steroids, or antihistamines. While these can provide temporary relief, they don’t address the underlying causes of eczema. Functional medicine takes a different approach by looking at the root causes and creating a personalized healing plan based on diet, gut health, environmental triggers, and immune function.

 

Functional medicine practitioners begin by investigating what’s happening inside the body. Instead of just treating the skin, they focus on why the skin is inflamed in the first place. Common underlying causes include:

  • Food sensitivities – Certain foods trigger inflammation in some people, and eliminating them can improve symptoms.
  • Leaky gut syndrome – A damaged gut lining allows toxins to enter the bloodstream, which can trigger immune responses that show up as skin inflammation.
  • Nutrient deficiencies – Low levels of essential vitamins and minerals, such as vitamin D, zinc, and omega-3 fatty acids, can impair skin healing.
  • Toxin buildup – Exposure to chemicals, heavy metals, and pollutants can contribute to eczema by overloading the body’s detoxification systems.

Functional medicine doctors use advanced testing, such as food allergy panels, stool tests, and inflammation markers, to determine the specific triggers causing eczema.

 

Once the root cause is identified, a treatment plan is tailored to each person’s needs. Some common functional medicine approaches include:

  • Gut healing protocols – Using probiotics, prebiotics, and gut-healing foods like bone broth and fermented vegetables to strengthen digestion and immunity.
  • Elimination diets – Removing common inflammatory foods such as dairy, gluten, soy, and processed sugar to reduce flare-ups.
  • Detoxification support – Encouraging the liver and kidneys to eliminate toxins through hydration, antioxidant-rich foods, and natural supplements.
  • Stress reduction techniques – Managing cortisol levels through meditation, acupuncture, and breathing exercises.

 

Functional medicine doesn’t dismiss conventional treatments but instead integrates holistic methods to complement traditional care. This might include:

  • Using topical treatments (such as natural anti-inflammatory creams) alongside prescription medications when necessary.
  • Supporting immune function with vitamin D, omega-3 fatty acids, and herbal remedies like turmeric and quercetin.
  • Combining dietary changes with stress management techniques to prevent flare-ups.

Functional medicine views eczema as a whole-body issue, not just a skin condition. By addressing gut health, reducing inflammation, eliminating toxins, and managing stress, it offers a long-term solution for eczema sufferers.

Frequently Asked Questions (FAQs)

faq

 

No, eczema is not contagious. It cannot be spread from one person to another through touch, air, or any form of contact. Eczema is an inflammatory skin condition caused by a combination of genetic, environmental, and immune system factors.

 

Yes, diet plays a major role in eczema management. Certain foods can trigger inflammation and worsen symptoms, especially common allergens like dairy, gluten, soy, eggs, and processed sugar. On the other hand, anti-inflammatory foods like leafy greens, fatty fish, turmeric, and probiotics can support skin health.

 

Natural oils and creams that help restore the skin barrier include:

  • Shea butter – Deeply hydrating and anti-inflammatory
  • Coconut oil – Has antibacterial and moisturizing properties
  • Aloe vera – Soothes and calms irritation
  • Oatmeal-based creams – Help relieve itching and inflammation

Fragrance-free, hypoallergenic products are best to avoid irritation.

 

Stress increases cortisol, a hormone that weakens the skin barrier and triggers inflammation. Many people notice their eczema gets worse during stressful periods, such as work deadlines, exams, or emotional distress. Managing stress through meditation, exercise, and deep breathing can help reduce flare-ups.

 

If traditional treatments like steroid creams and antihistamines only provide temporary relief, it may be time to see a functional medicine doctor. Functional medicine is beneficial for those who:

  • Experience frequent flare-ups despite using medications
  • Have eczema that worsens with certain foods or environmental triggers
  • Suspect an underlying issue like gut problems, food sensitivities, or hormonal imbalances
  • Want a long-term solution instead of short-term symptom management

Functional medicine focuses on treating eczema from the inside out, helping to identify and address the root causes rather than just masking symptoms. For more information visti holisticmedicalwellness.com

Achieving Long-Term Relief from Eczema

Eczema is not just a skin problem; it is a condition influenced by genetics, immune function, diet, environmental factors, and stress. While conventional treatments like steroid creams and antihistamines can provide relief, they often do not address the deeper causes of eczema. This is where functional medicine offers a different perspective by focusing on the root issues rather than just managing symptoms.

Many people with eczema experience flare-ups due to food sensitivities, exposure to harsh chemicals, stress, or changes in climate. Understanding these triggers can help reduce symptoms and prevent future outbreaks. Making lifestyle changes, such as switching to a diet rich in anti-inflammatory foods, using natural skincare products, and managing stress, can significantly improve skin health.

Functional medicine takes a whole-body approach, looking at factors like gut health, inflammation, and immune system balance to create long-term improvements. Instead of relying solely on medications, this approach encourages healing from within, helping to rebuild the skin barrier and restore balance to the body.

Eczema can be frustrating and challenging to manage, but long-term relief is possible. By identifying triggers, improving diet, and adopting healthier habits, many people find lasting improvements in their symptoms. If conventional treatments have not provided lasting results, exploring functional medicine may offer new solutions for healing eczema and achieving healthier skin.

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doctor koffler

Article Written By

Richard Koffler, MD

NPI Number- 1467557264
  • Dr. Koffler is a Physiatrist, specializing in Physical Medicine & Rehabilitation.
  • Graduated from the Sackler School of Medicine at Tel Aviv University in 1993 Dr. Koffler completed a one-year internship in internal medicine at Roosevelt Hospital in New York City.
  • Residency in Physical Medicine and Rehabilitation at the Rusk Institute at NYU Medical Center in New York City. Board certified in 1998.
  • Trained in acupuncture at Helms Medical Institute at UCLA His medical practice incorporates proven conventional western medicine integrating eastern alternative practices.
  • Medical Director of several medical clinics in NYC, Stamford CT, and Miami Beach, FL.
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