What Causes Eczema? Symptoms, Triggers, Types, and Treatment Guide

Eczema is a chronic skin condition that causes dry, itchy, and inflamed skin. It occurs when the skin barrier becomes weakened, allowing irritants, allergens, and bacteria to penetrate the skin more easily.

While eczema cannot be cured, it can be effectively managed with the right skincare routine, lifestyle changes, and medical treatments.

In this guide, you’ll learn:

• what causes eczema

• common eczema symptoms

• different types of eczema

• what triggers eczema flare-ups

• how to treat and manage eczema effectively 

What Is Eczema?

Eczema, also known as atopic dermatitis, is a chronic inflammatory skin condition that causes dryness, redness, itching, and irritation. It tends to occur in cycles, with flare-ups followed by periods of relief.

Eczema can appear anywhere on the body, but is most common on the face, hands, elbows, knees, and neck. It often begins in childhood but can also develop in adults.

Importantly, eczema is not contagious.

What Causes Eczema?

Eczema is caused by a combination of genetic, immune system, and environmental factors that weaken the skin barrier and trigger inflammation. These factors make the skin more sensitive to irritants and allergens.

Genetic Factors

If you have a family history of eczema, asthma, or hay fever, you are more likely to develop eczema. These conditions are part of the “atopic triad.”

Immune System Overreaction

People with eczema have an overactive immune response. When exposed to irritants or allergens, the body reacts strongly, causing inflammation and flare-ups.

Skin Barrier Dysfunction

A weakened skin barrier allows moisture to escape and irritants to enter. This leads to dryness, sensitivity, and increased vulnerability to triggers.

Environmental Factors

External elements such as pollution, dust mites, pollen, smoke, and extreme weather can aggravate eczema symptoms.

Lifestyle and Hormonal Changes

Stress, lack of sleep, hormonal fluctuations (e.g., menstruation or pregnancy), and diet can all influence eczema severity.

Common Triggers That Cause Eczema Flare-Ups

While causes explain why eczema develops, triggers are what make symptoms worse.

Common eczema triggers include:

• Harsh soaps and detergents

• Fragrances and skincare products

• Synthetic or rough fabrics (e.g. wool)

• Hot showers or baths

• Sweat and heat

• Dust mites and pet dander

• Stress and emotional factors

• Certain foods (e.g., dairy, eggs, nuts in some individuals)

Identifying your personal triggers is key to preventing flare-ups.

What Are the Symptoms of Eczema?

Eczema symptoms vary depending on the type and severity, but most people experience:

• Dry skin - rough, tight, and prone to cracking

• Itching - often intense and worse at night

• Redness - or darker discolouration on deeper skin tones

• Swelling - inflamed or puffy skin

• Flaky skin - peeling or scaling patches

• Oozing skin - fluid-filled or weeping areas during flare-ups

• Thickened skin - caused by repeated scratching (lichenification)

• Dark spots - post-inflammatory hyperpigmentation after healing

Types of Eczema

Eczema is not a single condition. There are several types, each with unique triggers and symptoms.

1. Atopic Dermatitis

This is the most common form of eczema, often associated with allergies and asthma. It typically begins in infancy or early childhood and may improve or worsen over time.

2. Contact Dermatitis

Caused by skin contact with irritants or allergens such as soaps, detergents, or chemicals. It can be either allergic or irritant in nature.

3. Dyshidrotic Eczema

This type causes small, itchy blisters on the hands, fingers, and feet. It’s often triggered by stress, moisture, or allergies.

4. Nummular Eczema

Appears as round, coin-shaped patches of irritated skin. It can be intensely itchy and often occurs after skin injuries like cuts or burns.

5. Seborrheic Dermatitis

Affects oily areas like the scalp, face, and upper chest. It’s often mistaken for dandruff but can be more severe, with red patches and scaling.

6. Stasis Dermatitis

Develops due to poor circulation, commonly in the lower legs. It can lead to swelling, redness, and itchy skin, especially in older adults.

Understanding your specific type of eczema is essential for choosing the right treatment and avoiding triggers.

Who Is Most Likely to Develop Eczema?

Eczema can affect people of all ages, but it is more common in:

• Infants and children - symptoms often begin early in life

• Adults - either persistent or newly developed eczema

• Older adults - especially with circulation-related conditions

• People with allergies or asthma - strong correlation with eczema

Can Eczema Be Cured Permanently?

There is currently no permanent cure for eczema. However, it can be effectively managed.

The goal of treatment is to:

• reduce flare-ups

• relieve itching and irritation

• repair the skin barrier

• control inflammation

With consistent care, many people experience long periods of symptom-free skin.

How to Treat and Manage Eczema

Managing eczema requires a combination of skincare and lifestyle adjustments.

1. Use Gentle Skincare Products

Choose fragrance-free, non-irritating cleansers and moisturisers. Natural or non-steroidal eczema creams can help soothe sensitive skin.

2. Moisturise Daily

Apply moisturiser immediately after bathing to lock in hydration. Reapply throughout the day if needed.

3. Avoid Triggers

Identify and minimise exposure to your personal triggers, including certain products, fabrics, or foods.

4. Wear Breathable Clothing

Opt for soft, loose-fitting fabrics like cotton to reduce irritation.

5. Maintain a Healthy Diet

Eat anti-inflammatory foods such as leafy greens, omega-3-rich foods, and whole foods. Avoid trigger foods if identified.

6. Manage Stress

Stress is a major trigger. Practices like meditation, exercise, and proper sleep can help regulate flare-ups.

7. Use Anti-Itch or Cooling Creams

Cooling creams for eczema can help relieve itching and calm inflamed skin during flare-ups.

How to Prevent Eczema Flare-Ups

Prevention is key to long-term eczema control.

• Moisturise consistently

• Avoid hot showers; use lukewarm water instead

• Use gentle, fragrance-free detergents

• Keep indoor air humidified

• Wear soft, breathable fabrics

• Maintain clean, allergen-free bedding

• Track triggers and flare-ups

When Should You See a Doctor for Eczema?

Seek medical advice if:

• symptoms worsen or spread rapidly

• skin becomes painful, swollen, or infected

• flare-ups interfere with sleep or daily life

• home treatments are no longer effective

A dermatologist may recommend prescription creams, medications, or allergy testing.

Conclusion

Eczema is a complex condition caused by a combination of genetic, environmental, and immune factors. While it cannot be cured, understanding what causes eczema and what triggers flare-ups can help you take control of your skin health.

With the right skincare routine, lifestyle habits, and treatment approach, you can reduce symptoms, prevent flare-ups, and maintain healthier, more comfortable skin over time.