Dermatology

Eczema explained as a chronic skin condition causing itching inflammation and recurring flare ups
Eczema explained as a chronic skin condition causing itching inflammation and recurring flare ups

Dermatology focuses on the health of the skin, hair, and nails. Learn about the diagnosis and treatment of acne, eczema, skin cancer, and cosmetic procedures.

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Overview and Definition

Eczema is a long-lasting skin problem that causes dryness, redness, itching, and irritation. It can look different and be mild or severe at different times. Eczema isn’t just one illness—it’s a group of skin conditions that make the skin more sensitive and likely to react to things around you, leading to flare-ups that can be uncomfortable.

Eczema happens when the skin’s barrier gets weak, so it loses moisture and lets in things that can irritate it. The immune system in the skin then overreacts, causing inflammation, itching, redness, and rashes—even from minor triggers.

Eczema can happen at any age and can show up on different parts of the body, like the hands, face, or scalp. For some people, it stays in one spot; for others, it spreads. Eczema usually comes and goes, with flares followed by better periods.

Eczema isn’t contagious and isn’t caused by being unclean. It happens because of a mix of genetics, immune system reactions, skin strength, and things in your environment. Because of this, eczema is different for everyone and is usually managed by controlling symptoms and preventing flare-ups, not by curing it completely.

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What Is Eczema

DERMATOLOGY

Eczema is defined as an inflammatory condition of the skin marked by itching, redness, dryness, and episodic rash formation due to skin barrier dysfunction and immune sensitivity.

Medical Description of Eczema

In healthy skin, the outer layer acts as a strong barrier that retains moisture and protects against irritants. In eczema, this barrier is compromised, leading to increased water loss and heightened skin reactivity.

Key characteristics of eczema include
• Chronic or recurrent inflammation of the skin
• Impaired skin barrier function
• Increased sensitivity to environmental triggers
• Periods of flare and remission

These features distinguish eczema from temporary skin irritation or allergic reactions.

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How Eczema Affects the Skin

DERMATOLOGY

Eczema alters both the structure and function of the skin.

Skin Barrier Disruption

The weakened barrier allows irritants, allergens, and microbes to interact more easily with deeper skin layers. This interaction activates immune responses that cause inflammation, redness, and itching.

Consequences of barrier disruption include
• Persistent dryness
• Increased itch sensitivity
• Greater risk of skin cracking and irritation

Scratching further damages the barrier, creating a cycle that can prolong symptoms.

Eczema as an Immune-Mediated Condition

Immune activity plays a central role in eczema development.

Inflammatory Skin Response

In eczema, immune cells in the skin become overly responsive, producing inflammatory signals that lead to visible rash and discomfort. This response can occur even without obvious external allergens, reflecting an underlying sensitivity rather than direct exposure alone.

This immune involvement explains why eczema may worsen during stress, illness, or environmental change.

DERMATOLOGY

Common Types of Eczema

Eczema includes several subtypes with distinct features.

Atopic Eczema

Atopic eczema, also known as atopic dermatitis, is the most common form and often begins in childhood. It is associated with a personal or family history of allergic conditions and tends to involve dry, itchy skin with recurrent flares.

Dyshidrotic Eczema

Dyshidrotic eczema primarily affects the hands and feet and is characterized by small, fluid-filled blisters that can be intensely itchy. Episodes may be triggered by stress, sweating, or skin irritation.

Nummular or Discoid Eczema

This form appears as round or coin-shaped patches of inflamed skin, often on the arms or legs, and may be mistaken for fungal infections due to its appearance.

Seborrheic-Related Eczema

Eczema affecting the scalp or areas rich in oil glands may present with redness and scaling, reflecting interaction between skin inflammation and oil production.

Eczema Versus Other Skin Conditions

Eczema is often compared with other inflammatory skin disorders.

Eczema and Psoriasis Differences

While both conditions cause redness and scaling, eczema typically involves intense itching and a disrupted skin barrier, whereas psoriasis is characterized by thicker plaques and faster skin cell turnover. Accurate distinction is important for appropriate management.

Chronic Nature of Eczema

Eczema is generally considered a long-term condition.

Why Eczema Tends to Recur

Because the underlying skin barrier and immune sensitivity remain present, eczema often follows a pattern of improvement and relapse. Triggers may vary over time, but the predisposition usually remains.

Understanding this chronic nature helps set realistic expectations for management and prevention.

Impact of Eczema on Daily Life

Although not life-threatening, eczema can significantly affect comfort and well-being.

Physical and Emotional Effects

Persistent itching, visible rash, and skin discomfort may interfere with sleep, concentration, and self-confidence. These effects highlight the importance of comprehensive care that addresses both physical symptoms and daily quality of life.

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Get in Touch.

Send us all your questions or requests, and our expert team will assist you.

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FREQUENTLY ASKED QUESTIONS

What is eczema?

Eczema is a chronic inflammatory skin condition causing itching, redness, and dryness.

No, eczema cannot be passed from person to person.

No, they are different conditions with distinct causes and features.

Yes, it can occur in infants, children, and adults.

It is often long-term but can be managed with consistent care.

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