The Different Types of Eczema
Eczema is not one condition. It is a family of related skin disorders that share some features – inflammation, itching, barrier dysfunction – but differ in where they appear, what triggers them and how they behave. Understanding which type you are dealing with makes it easier to manage, because what works for one form may be less effective for another.
Here is a plain-English guide to the main types.
Atopic dermatitis
This is the most common form and the one most people mean when they say “eczema.” It is a chronic condition linked to genetics, immune function and allergies. It often runs in families and frequently appears alongside hay fever and asthma.
Where it shows up: In babies, usually the face, scalp and outer arms and legs. In older children and adults, it moves to the inner elbows, behind the knees, wrists, ankles, hands and eyelids.
What it looks and feels like: Dry, itchy, inflamed skin that flares and settles in cycles. During a flare, skin may become red, swollen, weepy or crusty. Between flares, skin often stays dry and may thicken in areas that get scratched repeatedly. Itching is usually intense, often worse at night.
Common triggers: Stress, weather changes, allergens, soaps, detergents, certain fabrics, and in some people specific foods. There is usually a genetic component – many people with atopic dermatitis have mutations in genes that affect the skin barrier protein filaggrin.
Contact dermatitis
This develops when your skin reacts to something it has touched. It comes in two forms:
Irritant contact dermatitis is a direct chemical or physical reaction – frequent hand-washing, harsh soaps, cleaning products, or prolonged water exposure. The damage is proportional to the exposure.
Allergic contact dermatitis is an immune response to a specific substance your skin has become sensitised to. Common culprits include nickel (jewellery, belt buckles), fragrances, preservatives in skincare, latex, and hair dyes. Unlike irritant dermatitis, even tiny amounts can trigger a reaction, and it may take 24-48 hours to appear.
The clue: Contact dermatitis shows up exactly where the substance touched the skin. A stripe under a watch strap, a rash along the hairline, inflammation on the hands only – the pattern points to the cause.
Management: Identify and avoid the trigger. This is the only form of eczema that can be fully prevented once you know what is causing it.
Dyshidrotic eczema (pompholyx)
Small, intensely itchy blisters on the hands and feet – usually along the sides of the fingers and toes, palms and soles. The blisters look like tiny tapioca pearls under the skin and contain clear fluid, not pus.
Triggers: Stress is a major one. Seasonal allergies, sweating, exposure to metals (nickel, cobalt – including in some foods), and hot, humid weather can all set it off.
What to expect: Blisters last two to three weeks, then dry up and peel, often leaving the skin dry, cracked and tender. The cycle tends to repeat. Scratching or popping blisters risks infection.
This is a frustrating form because the hands and feet are hard to keep dry and protected, and the itching can be overwhelming. Gentle care and stress management are important alongside any topical treatment.
Seborrhoeic dermatitis
Affects areas with lots of oil glands – mainly the scalp, face (especially around the nose, eyebrows and behind the ears) and upper chest. Mild scalp cases are often dismissed as “just dandruff,” but it can be persistent and uncomfortable, especially when it affects the face.
What causes it: Related to an overgrowth of Malassezia yeast, which naturally lives on the skin but proliferates excessively in some people. Stress, hormonal changes and cold weather can make it worse.
What it looks like: Red, scaly patches with yellowish, oily flakes. On the scalp it causes scaling and itching that often extends beyond the hairline.
This type is different from most other eczema because it involves excess oil rather than dryness. Treatment needs to balance controlling the yeast without over-drying the skin.
Nummular (discoid) eczema
Distinctive coin-shaped patches of inflamed, scaly skin that can appear on the arms, legs, torso or anywhere on the body. The name comes from the Latin word for coin.
What triggers it: Often unclear. Dry skin, skin injuries (cuts, insect bites, scrapes), stress and environmental irritants can all play a role. It sometimes appears in people with no history of any other type of eczema.
What to expect: The patches are intensely itchy and can be weepy or crusty. They may persist for weeks or months and can leave darkened areas after they resolve. They respond to intensive moisturisation and gentle anti-inflammatory care.
Neurodermatitis (lichen simplex chronicus)
A cycle of itching and scratching that targets one or two specific areas – typically the back of the neck, wrists, forearms, thighs or ankles. The scratching itself becomes the problem: it thickens and darkens the skin, which then itches more, which leads to more scratching.
Triggers: Often begins with a minor irritation (an insect bite, a patch of dry skin) that becomes the focus of habitual scratching. Stress and anxiety are significant factors. Some people scratch unconsciously, especially at night.
Breaking the cycle requires addressing both the skin damage (gentle barrier repair and anti-inflammatory care) and the behavioural component (covering the area, redirecting the scratching habit, stress management).
Stasis dermatitis
Affects the lower legs of people with poor circulation, typically older adults or those with varicose veins. When blood does not flow properly back from the legs, fluid builds up and puts pressure on the veins, which eventually causes skin changes.
What it looks like: Red, itchy skin around the ankles that may become darker, thicker and prone to cracking or ulceration over time. It often appears gradually and can be mistaken for other conditions.
Management requires addressing the underlying circulation problem (leg elevation, compression stockings, regular movement) alongside gentle skincare. The skin is fragile, so products need to be particularly mild.
What they all have in common
Despite their differences, every form of eczema involves some degree of barrier dysfunction and inflammation. That means the fundamentals of care are consistent across all types:
- Keep the skin moisturised with a gentle, fragrance-free product.
- Avoid known irritants and triggers.
- Resist scratching – press, tap or use a cool cloth instead.
- See a doctor if the skin becomes infected, painful or is not improving.
Where the types differ is in their triggers, locations and specific treatment needs. If you are unsure which type you have, a GP or dermatologist can help with a proper diagnosis. Getting that clarity often saves months of trial and error.
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