Types of Eczema Explained: Causes, Symptoms & How Each Is Managed
Eczema is not a single condition. It's an umbrella term for several distinct inflammatory skin conditions that share surface similarities — dryness, itching, redness — but have different underlying causes, affect different areas, and respond to different treatments.
Knowing which type you have changes what you should do about it. Treating seborrhoeic dermatitis the same way as atopic eczema, or managing dyshidrotic eczema with the same approach as stasis dermatitis, produces poor results. This guide covers the most common forms of eczema, how to recognise each, and what each involves clinically.
Types of Eczema: Different Forms, Symptoms & Triggers Explained
Eczema is often talked about as if it’s one single condition — but there are actually several different types of eczema.
While they share similarities such as:
Dryness
Itching
Irritation
Inflammation
…different forms of eczema can affect:
Different parts of the body
Different age groups
Different skin types
Triggers and symptoms may also vary significantly from person to person.
Some people experience:
Mild occasional flare-ups
Persistent irritation
Seasonal symptoms
Severe dry, cracked skin
In this article, we’ll explore:
The most common types of eczema
What makes them different
Common symptoms and triggers
Why the skin barrier matters
Ways people try to support eczema-prone skin long term
In Short
Eczema is an umbrella term covering several skin conditions
Different types of eczema affect different areas and symptoms
Dryness, itching, and inflammation are common across most forms
Triggers vary significantly between individuals
Supporting the skin barrier is often important for eczema-prone skin
Supporting skin health internally may also matter
What Is Eczema?
Eczema refers to a group of inflammatory skin conditions that commonly cause:
Dryness
Itching
Redness
Irritation
Sensitive skin
Atopic dermatitis: the most common form
Atopic dermatitis (AD) is what most people mean when they say "eczema" — it is by far the most prevalent form, affecting approximately 20% of children and 3–10% of adults in the UK. The "atopic" in its name refers to its membership in the atopic triad, alongside asthma and allergic rhinitis (hay fever), reflecting a shared immune predisposition.
Mechanism. Atopic dermatitis involves a Th2-dominant immune dysregulation alongside filaggrin gene (FLG) mutations that compromise the skin barrier — allowing allergens to penetrate and trigger immune sensitisation. As covered in the allergies and eczema article in this series, the impaired barrier is the starting point for the atopic march that leads to food allergy, hay fever, and asthma in many affected individuals.
Where it appears. In infants, typically the face and extensor (outer) surfaces of limbs. As children get older, it classically shifts to the flexural folds — behind the knees, inside the elbows, neck, and wrists. In adults, face and hands are common sites, with the pattern becoming more variable.
Key features. Intense itch that is often worse at night (circadian histamine pattern), dry skin, and a chronic-relapsing course. Skin may become lichenified (thickened and leathery) in areas of repeated scratching.
Management. Consistent emollient use, topical corticosteroids for flares, and for moderate-to-severe disease: dupilumab (a biologic targeting IL-4/IL-13), JAK inhibitors, or immunosuppressants under specialist care.
Contact dermatitis: two distinct types
Contact dermatitis is inflammation triggered by contact with an external substance. There are two fundamentally different types with different mechanisms:
Irritant contact dermatitis (ICD) is the most common type of contact dermatitis overall. It occurs when the skin barrier is damaged by a substance directly — soaps, detergents, solvents, wet work, and harsh skincare are the most common causes. It is not an allergy — it is a direct toxic effect on skin cells. Redness, burning, dryness, and cracking typically appear at the contact site. Hand eczema in occupations involving frequent handwashing (healthcare workers, hairdressers, cleaners) is usually ICD. Treatment involves avoiding the offending substance and consistent barrier repair with emollients.
Allergic contact dermatitis (ACD) is a delayed Type IV hypersensitivity reaction — a T-cell-mediated immune response to a specific contact allergen. It requires prior sensitisation (an initial exposure that primes the immune system) before reactions occur on subsequent exposures. Common allergens include nickel, fragrances, preservatives (MI/MCI), rubber compounds, hair dye (PPD), and topical medications. The rash appears 24–72 hours after contact. Diagnosis is through patch testing by a dermatologist, which identifies the specific allergen. Treatment is allergen avoidance. As covered in the allergies and eczema article, people with atopic eczema have elevated rates of ACD due to their impaired barrier allowing easier allergen penetration.
Dyshidrotic eczema (pompholyx): the blister form
Dyshidrotic eczema — also called pompholyx — produces intensely itchy, small, deep-seated blisters (vesicles) on the palms, sides of the fingers, and soles of the feet. The blisters often appear in crops and are followed by peeling as they dry.
Triggers. Stress is one of the most consistently reported triggers. Other precipitants include sweating, contact allergy to nickel (which concentrates in sweat), skin contact with chromate compounds, and atopic background. It is more common in people with atopic eczema.
Nickel and dyshidrotic eczema. This is the most specific dietary connection: nickel, found in whole grains, legumes, nuts, seeds, and chocolate, can trigger dyshidrotic flares in people with nickel sensitisation — through both contact and dietary routes. People with frequent dyshidrotic flares who have confirmed nickel allergy (on patch testing) may benefit from a low-nickel diet under dietitian guidance.
Management. Potent topical corticosteroids applied promptly during active blistering, drainage of large blisters if necessary (under medical guidance), and identifying and addressing triggers. For frequent, severe dyshidrotic eczema, phototherapy (NB-UVB) has evidence for reducing frequency and severity.
Nummular eczema: the coin-shaped form
Nummular eczema (also called discoid eczema) produces circular or oval plaques of eczematous skin — the coin shape distinguishes it visually from other forms. Plaques are itchy, may ooze initially then become dry and scaly, and are most common on the limbs and trunk.
Mechanism. Less well understood than atopic dermatitis. It may represent a specific pattern of atopic eczema, or may occur without atopic background. Dry skin is a consistent underlying feature. Cold, dry winter conditions typically worsen it.
Management. High-potency topical corticosteroids for active plaques, consistent emollient use, and treating any S. aureus colonisation that complicates the picture. Individual plaques respond well to treatment but relapse is common.
Seborrhoeic dermatitis: a yeast-driven condition
Seborrhoeic dermatitis is distinct from atopic eczema in its mechanism — it is not primarily an immune dysregulation condition but a response to Malassezia yeast overgrowth in sebum-rich environments.
Where it appears. The scalp (dandruff is a mild form), sides of the nose, eyebrows, ears, central forehead, and chest. These are the areas with the highest density of sebaceous glands, which produce the sebum that Malassezia feeds on. It can also affect skin folds.
Key features. Greasy, yellowish scales (rather than the dry, silvery scales of other eczema types), redness, and itching. On the scalp, it produces the characteristic flaking of dandruff.
Mechanism. Malassezia metabolises sebum and produces fatty acids that irritate the skin surface, triggering an inflammatory response. This is why antifungal treatments (ketoconazole shampoos and creams) are effective for seborrhoeic dermatitis — treating the underlying yeast addresses the cause. This is covered in detail in the scalp eczema article in this series.
Management. Antifungal shampoos and creams (ketoconazole 2%, zinc pyrithione, selenium sulphide), low-potency topical steroids for inflammation, and calcineurin inhibitors for long-term maintenance on the face.
Stasis dermatitis: the circulation-related form
Stasis dermatitis affects the lower legs and is caused by venous hypertension — elevated pressure in the veins of the legs due to impaired circulation (varicose veins, deep vein thrombosis, chronic venous insufficiency). Fluid leaks from capillaries under high pressure, accumulating in the skin of the lower leg and producing a characteristic pattern of redness, swelling, itching, and brownish skin discolouration from haemosiderin deposits (iron released from damaged red blood cells).
It often progresses to leg ulceration without management. The discolouration is permanent once established.
Management. Compression therapy (compression stockings) to address the underlying venous hypertension is essential — without it, topical treatment alone produces temporary improvement at best. Emollient use addresses the dryness component. People with stasis dermatitis also have elevated risk of ACD from topical treatment products — patch testing is worthwhile if there are reactions to treatments.
Shared principles across all types
Despite their different causes, most eczema types share a common practical foundation:
Consistent emollient use maintains the barrier across all types that involve barrier dysfunction. Fragrance-free skincare reduces the contact sensitisation risk that is elevated across all eczema-prone skin. Trigger identification through systematic observation — covered in the triggers article in this series — is relevant regardless of type. Medical assessment is appropriate for moderate-to-severe presentations of any type, and many forms benefit from specialist patch testing (ACD), phototherapy (dyshidrotic, nummular), or biologic/systemic treatment (moderate-to-severe atopic).
Supplement Support for Eczema-Prone Skin
The nutritional foundations most relevant to eczema — vitamin D, zinc, omega-3s, and magnesium — support the immune and barrier function that underpins most eczema types, and are covered in depth in the eczema supplements article in this series.
Drought's Skin Support Formula provides 14 nutrients selected for their roles in skin barrier function and immune regulation — addressing the internal dimensions of eczema that apply across all types. Made in the UK, suitable for vegetarians, designed for consistent long-term daily use.
FAQ
What is the most common type of eczema?
Atopic dermatitis — affecting approximately 20% of children and 3–10% of adults in the UK. It involves filaggrin-related barrier dysfunction and Th2 immune dysregulation.
What is the difference between irritant and allergic contact dermatitis?
Irritant contact dermatitis is a direct toxic effect of a substance on skin cells — no allergy involved. Allergic contact dermatitis is a T-cell-mediated immune response requiring prior sensitisation to a specific allergen, diagnosed by patch testing.
What causes seborrhoeic dermatitis?
Malassezia yeast overgrowth in sebum-rich areas. Antifungal treatments are effective because they address the underlying cause.
What are the small blisters on my hands and feet?
This sounds like dyshidrotic eczema (pompholyx) — small, intensely itchy blisters on the palms, fingers, and soles. Stress, sweating, and nickel sensitivity are common triggers.
What causes the round patches of eczema?
Circular or coin-shaped patches are characteristic of nummular (discoid) eczema. High-potency topical corticosteroids are typically needed for active plaques.
Can eczema on the lower legs be caused by poor circulation?
Yes — stasis dermatitis is specifically caused by venous hypertension. Compression therapy is essential; emollients alone are insufficient without addressing the underlying circulatory problem.
Final Thoughts
The six most common forms of eczema — atopic dermatitis, irritant and allergic contact dermatitis, seborrhoeic dermatitis, dyshidrotic eczema, nummular eczema, neurodermatitis, and stasis dermatitis — each have distinct causes, locations, features, and treatment approaches. Knowing which type is present is the starting point for effective management: seborrhoeic dermatitis needs antifungal treatment, not just emollients; stasis dermatitis needs compression therapy, not just topical steroids; allergic contact dermatitis needs allergen identification through patch testing, not just barrier repair. Getting the type right is the most important step.
The Drought Skin Condition Support Supplement is designed to support eczema, psoriasis, and acne-prone skin from within as part of a broader long-term skin wellness routine.
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Eczema and Allergies: The Connection, Common Triggers & What Actually Helps
How to Treat Scalp Eczema: Causes, Symptoms & What Actually Helps
Facial Eczema: Types, Causes, Treatments & the Best Skincare Routine
Psoriasis & Eczema Triggers: What Causes Flare-Ups & How to Identify Yours
Eczema Supplements: What the Evidence Shows for Each Nutrient
