Scalp Eczema And Hair Loss: Why It Happens And Does It Grow Back
Last reviewed on 9 August 2026. We review our treatment guides every six months to keep them accurate.
Key points
Scalp eczema is inflammation of the scalp skin. The two main kinds are atopic eczema, the dry, itchy condition many people have on their skin generally, and contact dermatitis, a reaction to something the scalp has touched, such as a hair dye or shampoo.
Its hallmark is itch. As the NHS describes eczema, it causes "dry, itchy" skin that can look "cracked, crusty, scaly or thickened", and on the scalp the itching is usually the main problem.
Scalp eczema does not attack the hair follicles directly, so any hair loss it causes is indirect, mostly from the scratching and rubbing that intense itch provokes, plus some temporary shedding from the inflammation.
That means the hair loss is almost always temporary and non-scarring. Once the eczema is controlled and the scratching stops, the hair grows back.
Contact dermatitis is worth pinning down, because it is caused by a specific trigger, often a hair dye, shampoo, fragrance or preservative, and it settles once that trigger is found and avoided. DermNet notes that "patch tests are important to identify contact allergens in any severe or persistent case".
Treatment is aimed at calming the skin: moisturisers (emollients), scalp-friendly topical steroids, gentle products, and avoiding known triggers.
It is not the same as dandruff, psoriasis or a scalp infection, which are treated differently, so persistent or worsening scalp itch and redness is worth having diagnosed by a GP or dermatologist.
An itchy, flaky, sore scalp is uncomfortable and worrying, especially when hair seems to come away with the scratching. The reassuring news is that scalp eczema, unlike some scalp conditions, does not scar the follicles, so the hair loss that comes with it is almost always temporary. The key is calming the inflammation and, where a specific trigger is to blame, finding and avoiding it.
This guide explains what scalp eczema is, whether and why it causes hair loss, what triggers it, how it is treated, and how to protect your hair while it settles. Because it can look like dandruff, psoriasis or infection, all of which are managed differently, a proper diagnosis is worth having if it does not clear.
What is scalp eczema?
Eczema, also called dermatitis, means inflamed, irritated skin, and it can affect the scalp just as it affects skin elsewhere. On the scalp it usually takes one of two forms.
The first is atopic eczema (atopic dermatitis), the common, long-term itchy condition that tends to run in families alongside asthma and hay fever. DermNet calls it "the most common inflammatory skin disease worldwide", one that "presents as generalised skin dryness, itch, and rash" and runs a course of flare-ups and quieter periods. When it involves the scalp it brings dry, itchy, red or flaky patches.
The second is contact dermatitis, where the scalp reacts to something it has come into contact with. DermNet divides this into irritant contact dermatitis, from repeated exposure to harsh products such as strong shampoos, and allergic contact dermatitis, an allergic reaction to a specific substance, most classically a hair dye, but also fragrances, preservatives or nickel. The skin is, in DermNet's words, "nearly always itchy".
There is a third common cause of a flaky, itchy scalp, seborrhoeic dermatitis, which is the inflammatory condition that ordinary dandruff belongs to. Because it behaves and is treated somewhat differently, it is covered in our guide on dandruff and seborrhoeic dermatitis rather than here.
Does scalp eczema cause hair loss?
It can, but almost always indirectly and temporarily. This is the most important thing to understand about scalp eczema and hair, and it is genuinely reassuring: the condition inflames the skin around the follicles, but it does not destroy them, so it does not cause the permanent, scarring hair loss that conditions such as central centrifugal cicatricial alopecia or frontal fibrosing alopecia can.
The hair loss that does happen comes about in two ways. By far the biggest is the itch. Scalp eczema is intensely itchy, and the resulting scratching and rubbing, part of what dermatologists call the itch-scratch cycle, physically breaks and pulls out hairs and damages the skin further. The second is a degree of temporary shedding: significant scalp inflammation can tip some hairs prematurely into the resting and shedding phase, a reactive telogen effluvium that thins the hair for a few months.
Because neither of these scars the follicle, the hair recovers. Once the eczema is brought under control and the scratching stops, the follicles are left intact and the hair grows back over the following months. The practical message, then, is that treating the eczema and resisting the urge to scratch is also the treatment for the hair loss.
What causes scalp eczema and what triggers it?
Atopic eczema flares from triggers like soap, heat and stress, while contact dermatitis is a reaction to a specific substance such as a hair dye.
The two types have different drivers. Atopic eczema comes from a combination of a genetic tendency to a weaker skin barrier and an over-reactive immune system, and it flares in response to triggers rather than having a single cause. The NHS lists common flare triggers as "soap, washing detergent, some fabrics or pets", along with heat, stress, skin infections and hormonal changes.
Contact dermatitis, by contrast, is caused by a specific substance touching the scalp, and identifying it is the key to clearing it. The usual culprits on the scalp are hair products: permanent hair dyes are the classic allergic trigger, but shampoos, conditioners, styling products, fragrances and preservatives can all be responsible, and nickel from hairpins or tools occasionally is. Where an allergy is suspected, DermNet advises that "patch tests are important to identify contact allergens in any severe or persistent case of contact dermatitis", after which "it is important to avoid direct contact with them". Working out that a new shampoo or hair dye is the problem, and stopping it, is often what resolves the whole thing.
How is scalp eczema treated?
Treatment aims to calm the inflammation, restore the skin barrier and remove whatever is provoking it, and it is usually effective. The mainstays, drawn from the NHS and DermNet, are:
Emollients (moisturisers). Regular moisturising creams, lotions or gels are the foundation of eczema care, repairing the dry, cracked skin barrier. Scalp-suitable formulations and gentle, fragrance-free washes are used so as not to irritate further.
Topical corticosteroids. Short courses of steroid preparations calm the inflammation during a flare. On the scalp these come in hair-friendly forms such as lotions, gels, foams and solutions rather than thick creams.
Avoiding triggers. For atopic eczema that means limiting the flare triggers above; for contact dermatitis it means identifying and then avoiding the specific product or allergen, sometimes after patch testing.
Managing the itch. Because scratching drives both the eczema and the hair loss, controlling the itch matters, and a doctor may suggest antihistamines or other measures to help break the itch-scratch cycle.
Where a medicated shampoo is appropriate, or where the diagnosis is uncertain between eczema, seborrhoeic dermatitis, psoriasis or a scalp infection, a GP or dermatologist can confirm what it is and tailor the treatment, since these conditions overlap in appearance but are not treated the same way.
How can I protect my hair while managing scalp eczema?
Protect your hair by treating flares early, resisting the urge to scratch, using gentle fragrance-free products, tracking down triggers, and keeping up your treatment.
Alongside the medical treatment, a few habits protect the hair while the scalp settles:
Treat flares early rather than letting them become severe and intensely itchy, since the more you scratch, the more hair is lost.
Try hard not to scratch or rub. It is the single biggest cause of the hair loss, and keeping nails short and treating the itch makes it easier.
Be gentle. Use mild, fragrance-free products, wash with lukewarm rather than hot water, and avoid harsh shampoos, tight styling and heat that can further irritate an inflamed scalp.
Track down triggers. If a flare followed a new shampoo, hair dye or styling product, stopping it may be all that is needed; keep a note of what preceded flares.
Keep up the treatment your doctor advises even as things improve, because eczema comes and goes and controlling it is what keeps the hair loss at bay.
None of this replaces proper treatment, but it works alongside it, and it is largely within your control.
Scalp eczema and hair transplants
Because scalp eczema is non-scarring, it does not usually cause the permanent loss that a hair transplant is designed to treat, and the hair generally recovers with treatment rather than needing surgery. It is worth knowing, though, that anyone considering a hair transplant for a separate reason, such as pattern hair loss, should have any active scalp eczema well controlled first, since operating on inflamed, irritated skin can affect healing and comfort. As with any scalp condition, it is something to raise and settle with the surgeon before surgery rather than during recovery.
When should I see a doctor?
It is worth seeing a GP or dermatologist if your scalp stays itchy, red or flaky despite gentle care, if it is sore, weeping or crusting, if you are losing hair, or if you suspect a hair product is to blame and want it confirmed. Getting the diagnosis right matters, because scalp eczema, seborrhoeic dermatitis, psoriasis and scalp infections look similar but are treated differently, and because a persistent contact allergy will keep flaring until the trigger is identified, sometimes with patch testing, and removed. Early, effective treatment is also the best way to protect the hair.
Where does this leave scalp eczema and hair loss?
For almost everyone, scalp eczema and hair loss is a temporary, treatable problem rather than a permanent one. The condition inflames the skin but spares the follicles, so the hair loss comes mainly from scratching and a little reactive shedding, and it recovers once the eczema is calmed. The two keys are to treat the inflammation properly and, for contact dermatitis, to find and avoid the trigger, whether that is a hair dye, a shampoo or something else the scalp is reacting to.
If your scalp is persistently itchy, inflamed or flaky and you are noticing hair loss, a GP or dermatologist can confirm the cause and put together the right treatment, which is a better route than persevering with products that may be making it worse.
Frequently asked questions
Does scalp eczema cause permanent hair loss?
Almost never. Scalp eczema inflames the skin but does not scar or destroy the hair follicles, so the hair loss it causes, mainly from scratching and some temporary shedding, is reversible. Once the eczema is treated and the scratching stops, the hair grows back over a few months. This is different from scarring scalp conditions, where the loss is permanent, which is one reason a persistent itchy, inflamed scalp is worth having diagnosed.
Will my hair grow back after scalp eczema?
For the great majority of people, yes. Because the follicles are not damaged, the hair regrows once the inflammation is controlled and you stop scratching, following the normal hair cycle over several months. The most useful thing you can do to speed recovery is to treat flares early and resist the urge to scratch, since scratching is the main cause of the hair loss.
Can hair dye or shampoo cause scalp eczema?
Yes. This is contact dermatitis, a reaction to something the scalp has touched. Permanent hair dyes are the classic allergic trigger, but shampoos, conditioners, styling products, fragrances and preservatives can all cause it, either as an allergy or by irritating the skin. If a flare followed a new product, stopping it often clears the problem, and a doctor can arrange patch testing to pin down a specific allergen in stubborn cases.
Is scalp eczema the same as dandruff or psoriasis?
No, though they can look alike. Dandruff and its more inflamed form, seborrhoeic dermatitis, tend to cause greasy, yellowish flaking; psoriasis causes thicker, silvery, well-defined plaques; and scalp eczema causes dry, itchy, red or flaky inflammation, often linked to atopic eczema elsewhere or to a product the scalp is reacting to. They are treated differently, so if simple measures are not working it is worth having a doctor confirm which one it is.
How do I stop scalp eczema itching?
By calming the inflammation and protecting the skin. Regular emollients, short courses of a scalp-suitable topical steroid during flares, gentle fragrance-free products, lukewarm washing, and avoiding known triggers all reduce the itch, and a doctor may suggest antihistamines to help. Controlling the itch matters for your hair as well as your comfort, because the scratching it provokes is the main cause of the hair loss.
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