Eczema vs Psoriasis: How to Tell the Difference (Pictures, Symptoms and Treatment)
Skin condition guide
Part of our Eczema guide · Psoriasis guide
Eczema usually causes dry, intensely itchy, poorly defined patches in skin creases such as the inside of the elbows and knees, while psoriasis causes thick, raised plaques with sharp edges and silvery scale on the outside of the elbows and knees, the scalp and lower back. Psoriasis can also affect the nails and joints, whereas eczema is linked with asthma and hay fever. Both itch, both flare, and both benefit from good daily skin care, but their medical treatments differ.
- Eczema favours skin creases; psoriasis favours the outer elbows and knees, scalp and lower back.
- Psoriasis plaques are thick with sharp edges and silvery scale; eczema patches are drier and less well defined.
- Itch is common in both: in one study it affected up to 100% of people with some psoriasis types.
- About 1 in 5 people with psoriasis develop psoriatic arthritis; eczema does not affect the joints.
- In TCM, eczema is mainly Damp-Heat and Wind, while psoriasis is mainly Blood Heat, Dryness and Stasis.
What is the main difference between eczema and psoriasis?
Both conditions cause red, itchy, scaly skin, which is why they are easy to confuse. The key difference is the type of inflammation. Eczema is driven by a weak skin barrier and an allergy-type immune response, so it tends to be dry, poorly defined and very itchy. Psoriasis is driven by a different immune pathway that makes skin cells grow too fast, so it forms thick, raised plaques with sharp edges and silvery scale.
How can you tell eczema and psoriasis apart?
| Feature | Eczema (atopic dermatitis) | Psoriasis |
|---|---|---|
| Typical age of onset | Usually starts in childhood, but can begin at any age | Most often starts in early adulthood, with a second peak around 50 to 60; less common in young children |
| Where it appears | Inside elbows and knees, neck, face, hands, wrists and ankles | Outside of elbows and knees, scalp, lower back, nails and skin folds |
| How it looks | Dry, rough, poorly defined patches; can weep, crust or thicken from scratching | Thick, raised plaques with sharp edges and silvery-white scale |
| Itch | Intense, often the main symptom | Common and can be strong, sometimes with burning or stinging |
| Nails | Usually normal | Pitting, ridges, lifting or yellow-brown spots are common |
| Joints | Not affected | About 1 in 5 people develop psoriatic arthritis |
| Linked conditions | Asthma, hay fever, food allergy | Psoriatic arthritis, metabolic and heart risk |
| Common triggers | Soaps, fragrance, dry air, sweat, allergens, stress | Stress, strep throat, skin injury, smoking, alcohol, some medicines |
Does psoriasis itch as much as eczema?
Many people are surprised to learn that psoriasis itches too. In a multicentre study of 295 people with nine types of psoriasis, itch was common in every type and reached 100% in some, such as scalp and nummular psoriasis (Jaworecka et al., 2023). Eczema itch, however, is usually the defining symptom: if a patch itches intensely before it even looks very red, eczema is more likely.
How common are eczema and psoriasis?
Eczema is the more common of the two, especially in children. Psoriasis affects up to about 2% of adults in North America, western Europe and Australasia, and is less common in east Asia (Parisi et al., 2020). About 1 in 5 people with psoriasis also develop psoriatic arthritis (Alinaghi et al., 2019), which is why joint pain or morning stiffness alongside a rash should be mentioned to a doctor.
Can you have eczema and psoriasis at the same time?
Yes. Some people have both conditions, and some rashes show features of each, especially on the hands, scalp and face. Doctors sometimes call this overlap "psoriasiform eczema" or "eczematous psoriasis". If treatments for one condition are not working, it is worth asking whether the diagnosis should be reviewed. A dermatologist can usually tell them apart by looking, and occasionally takes a small skin sample.
Are eczema and psoriasis treated differently?
| Approach | Eczema | Psoriasis |
|---|---|---|
| Daily care | Moisturisers are the foundation and reduce flares (van Zuuren et al., 2017) | Moisturisers soften scale and ease itch |
| First-line creams | Topical steroids, tacrolimus or pimecrolimus, crisaborole | Topical steroids, vitamin D creams (calcipotriol), coal tar, salicylic acid |
| Newer non-steroid creams | Ruxolitinib, roflumilast | Tapinarof, roflumilast |
| Severe disease | Phototherapy, dupilumab and other biologics, JAK tablets | Phototherapy, methotrexate, biologics |
| Guidelines | AAAAI/ACAAI 2023 (Chu et al., 2024) | AAD-NPF topical guideline (Elmets et al., 2021) |
For both conditions, steroid-free options can take over daily care once a flare is under control. See natural alternatives to steroid cream and how to switch from steroid cream safely.
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How does Traditional Chinese Medicine see eczema and psoriasis?
| Eczema in TCM | Psoriasis in TCM | |
|---|---|---|
| Main patterns | Damp-Heat, Wind, Spleen Deficiency with Dampness, Blood Dryness | Blood Heat, Blood Dryness, Blood Stasis |
| What it describes | Weeping, itchy or recurring rashes; dry, chronic patches later | Bright red spreading plaques; dry, scaly plaques; thick, long-standing plaques |
| External herbs | Ku Shen, She Chuang Zi, Huang Bai, Bai Xian Pi | Indigo naturalis (Qing Dai), Ku Shen and cooling, moistening herbs |
Ku Shen and She Chuang Zi are among the core herbs in topical Chinese herbal treatments for eczema (Wang et al., 2023), and Sophora root (Ku Shen) is among the most used herbs in topical formulas for psoriasis (Deng et al., 2014). Read more in how TCM explains eczema and herbal remedies for psoriasis.
When should you see a doctor?
- You are not sure whether the rash is eczema, psoriasis or a fungal infection.
- The rash is spreading, weeping, crusted or painful.
- You have joint pain, swelling or morning stiffness, or changes in your nails.
- Over-the-counter care has not helped after a few weeks.
- Itch or rash is affecting your sleep, work or mood.
Where QICAOGANGMU fits
QICAOGANGMU Steroid-Free Herbal Cream
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Whether your patches are eczema or psoriasis, QICAOGANGMU is a steroid-free daily cream for itchy, dry or rough skin. It combines She Chuang Zi 3% and Ku Shen 1.5% with cooling Bing Pian (borneol) 2% and menthol 0.5%, plus Bai Bu 0.5%, in a moisturising glycerin and petrolatum base that also softens scale.
- Steroid-free: TÜV SÜD PSB found none of 8 corticosteroids (lab reports)
- Fully declared formula: every active ingredient and its percentage on the label
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Patch test first and apply a thin layer to intact skin; avoid the eyes, lips, genitals and broken or weeping skin. Use alongside, not instead of, treatment prescribed by your doctor. QICAOGANGMU at a glance · Product details
Free guide: The 7-Day Itch Relief Plan
One simple step a day to calm itchy skin and sleep better, from our herbal science researcher. Get the 10-page PDF:
- Daily checklists and an itch diary
- Dermatology and TCM tips side by side
- A bedtime routine for night-time itch
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Frequently asked questions
How can I tell if I have eczema or psoriasis?
Look at where and how the rash appears. Eczema tends to be dry, very itchy and poorly defined in skin creases, while psoriasis forms thick plaques with sharp edges and silvery scale on the elbows, knees, scalp and lower back, and can affect nails and joints. A doctor can confirm the diagnosis.
Which is worse, eczema or psoriasis?
Neither is simply worse; both range from mild to severe. Psoriasis is more often linked with joint disease and heart and metabolic risk, while eczema is linked with asthma and allergies and is usually itchier.
Can eczema turn into psoriasis?
No, eczema does not turn into psoriasis. They are different conditions, but a person can have both, and some rashes show features of each, which can make diagnosis harder.
Does psoriasis itch like eczema?
Yes, itch is very common in psoriasis and can be intense, sometimes with burning. Eczema itch is usually more central to the condition and often starts before the rash is obvious.
Can the same cream treat eczema and psoriasis?
Moisturisers and many steroid-free soothing creams help both. Prescription treatments differ: psoriasis often uses vitamin D creams and coal tar, while eczema uses calcineurin inhibitors and other options.
Related articles
References
- Jaworecka K, Kwiatkowska D, Marek-Józefowicz L, et al. Characteristics of pruritus in various clinical variants of psoriasis: final report of the binational, multicentre, cross-sectional study. J Eur Acad Dermatol Venereol. 2023;37(4):787-795. PMID 36606568
- Parisi R, Iskandar IYK, Kontopantelis E, et al. National, regional, and worldwide epidemiology of psoriasis: systematic analysis and modelling study. BMJ. 2020;369:m1590. PMID 32467098
- Alinaghi F, Calov M, Kristensen LE, et al. Prevalence of psoriatic arthritis in patients with psoriasis: a systematic review and meta-analysis of observational and clinical studies. J Am Acad Dermatol. 2019;80(1):251-265. PMID 29928910
- van Zuuren EJ, Fedorowicz Z, Christensen R, Lavrijsen A, Arents BWM. Emollients and moisturisers for eczema. Cochrane Database Syst Rev. 2017;2(2):CD012119. PMID 28166390
- Chu DK, Schneider L, Asiniwasis RN, et al. Atopic dermatitis (eczema) guidelines: 2023 AAAAI/ACAAI Joint Task Force on Practice Parameters GRADE- and Institute of Medicine-based recommendations. Ann Allergy Asthma Immunol. 2024;132(3):274-312. PMID 38108679
- Elmets CA, Korman NJ, Prater EF, et al. Joint AAD-NPF guidelines of care for the management and treatment of psoriasis with topical therapy and alternative medicine modalities for psoriasis severity measures. J Am Acad Dermatol. 2021;84(2):432-470. PMID 32738429
- Wang MC, Chou YT, Kao MC, et al. Topical Chinese herbal medicine in treating atopic dermatitis (eczema): a systematic review and meta-analysis with core herbs exploration. J Ethnopharmacol. 2023;317:116790. PMID 37328084
- Deng S, May BH, Zhang AL, et al. Topical herbal formulae in the management of psoriasis: systematic review with meta-analysis. Phytother Res. 2014;28(4):480-497. PMID 23817996
Educational information only. This article does not replace a medical diagnosis. Rashes that are spreading, painful, infected or accompanied by joint symptoms should be assessed by a doctor.
