Scalp Psoriasis And Hair Loss: Why It Happens And Does It Grow Back
Last reviewed on 2 August 2026. We review our treatment guides every six months to keep them accurate.
Key points
Scalp psoriasis is a common, long-term skin condition that causes red or discoloured, well-defined patches covered in silvery-white scale. It is not an infection and, as the NHS makes clear, it is not contagious: you cannot catch it or pass it on.
It can cause hair loss, but the hair loss is almost always temporary. A 2025 review concludes that "hair loss in psoriasis is almost always non-scarring and reversible", with most people getting complete regrowth once the psoriasis is treated.
The hair usually falls out because of the inflammation, and because of scratching and picking at the scale, rather than the psoriasis destroying the follicle. This is why it grows back.
Permanent, scarring hair loss is possible but rare, and tends to follow long-standing, poorly controlled disease, which is the main reason to treat it properly and resist picking the scale.
Treatment is aimed at calming the plaques: medicated shampoos, topical steroids, vitamin D creams such as calcipotriol, and scale-softening agents like salicylic acid, with stronger tablet or injection treatments reserved for severe cases.
Scalp psoriasis does not automatically rule out a hair transplant, but it needs careful specialist assessment first, because surgery can trigger new plaques in the treated skin (the Koebner phenomenon).
Because psoriasis is a medical condition, it should be assessed and managed by a GP or dermatologist. This guide is educational and is not a substitute for that advice.
Losing hair on top of dealing with an itchy, flaky, sometimes painful scalp is understandably worrying, and a lot of people assume the two are permanently linked. The reassuring reality is that the hair loss which comes with scalp psoriasis is almost always temporary, and understanding why it happens is the key to protecting your hair while you get the condition under control.
This guide explains what scalp psoriasis is, whether and why it causes hair loss, whether the hair grows back, how it is treated, how to look after your hair in the meantime, and what it means if you are considering a hair transplant. Throughout, the condition itself should be managed with a GP or dermatologist.
What is scalp psoriasis?
Psoriasis is a common long-term condition in which the skin makes new cells far too quickly, so they build up on the surface instead of being shed unnoticed. The NHS describes the result as "dry, itchy, sore, flaky patches of skin that form what look like silvery-white scales". It is driven by the immune system rather than by poor hygiene, and it is not contagious.
On the scalp specifically, DermNet describes "red, thickened, well-demarcated patches or plaques with overlying silvery-white scales, affecting part or all of the scalp". It often appears at the back of the head, the hairline, the forehead, the ears or the neck, and it can be partly hidden by the hair while still causing itching and heavy, dandruff-like flaking. The scalp is one of the most commonly affected areas of the body.
Like psoriasis elsewhere, it tends to come and goes in cycles, with flare-ups when it is worse and quieter periods in between. It cannot currently be cured, but as the NHS puts it, there "are treatments to help manage your symptoms", and for most people the condition can be well controlled.
Is it scalp psoriasis or just dandruff?
The two are easy to confuse because both flake, but they are different. Ordinary dandruff and its more inflamed cousin seborrhoeic dermatitis tend to produce finer, greasier, yellowish-white scale that is spread more diffusely across the scalp. Psoriasis plaques are usually thicker, drier, more sharply defined at their edges, and topped with a more silvery scale, and psoriasis often shows up elsewhere too, such as the elbows, knees or nails. Confusingly, the two can occur together, a combination sometimes called sebopsoriasis. Our guide on dandruff and hair loss covers the milder end of the spectrum; if the scale is thick, well-defined and stubborn, it is worth asking a doctor whether it is psoriasis.
Does scalp psoriasis cause hair loss?
It can, particularly when it is severe or long-standing, but it is important to be clear about the kind of hair loss involved. DermNet notes that "in severe cases, scalp psoriasis can be associated with temporary localised hair loss", and lists reversible hair loss among the recognised complications. So hair loss is a real feature of more troublesome scalp psoriasis, but the word that matters is temporary.
The hair tends to thin or shed over the affected patches rather than in the classic pattern of male or female pattern baldness. Many people also notice more hair coming away when they wash or comb, especially if they have been scratching or lifting the scale.
Will my hair grow back?
For the great majority of people, yes. This is the single most reassuring fact about scalp psoriasis and hair, and it is worth stating plainly. The 2025 review "Psoriasis and Alopecia: Unveiling the Links" concludes that "hair loss in psoriasis is almost always non-scarring and reversible", and that most patients experience complete regrowth of scalp hair after their psoriasis is successfully treated. In other words, the follicles are still there and still working; they have been disrupted, not destroyed.
There is an important exception, and honesty matters here. The same review notes that scarring alopecia, where the follicle is permanently lost, can occur rarely in psoriasis, usually after chronic, repeatedly relapsing disease. One older case series it cites found scarring in five of forty-seven patients studied, so it is uncommon but not unheard of. This is precisely why the condition should be treated rather than tolerated, and why picking or forcibly removing the scale, which can worsen and prolong the inflammation, is worth avoiding.
Why does the hair fall out?
Understanding the mechanism explains both why the hair sheds and why it comes back. According to the 2025 review, in most cases of scalp psoriasis the hair loss is a form of telogen effluvium: the inflammation, and the physical trauma of scratching and picking at the scale, push a larger than normal proportion of hairs prematurely into the resting and shedding phase of the hair cycle. Our guide on telogen effluvium explains this reactive shedding in more detail. Because telogen effluvium does not damage the follicle itself, the hair regrows once the trigger, in this case the active psoriasis, is brought under control.
Three things drive the shedding, and all three point to the same advice. The inflammation in and around the plaques disturbs the follicles. Scratching and rubbing an itchy scalp adds mechanical trauma. And aggressive removal of thick scale, understandable when it looks unsightly, can pull out the hair caught within it and further inflame the skin. Calming the psoriasis and being gentle with the scalp therefore protects the hair on every front.
How is scalp psoriasis treated?
Treatment aims to reduce the scale and calm the inflammation, and it is usually very effective. The right choice depends on how severe the psoriasis is and should be guided by a GP or dermatologist, but the usual options run roughly as follows.
Medicated shampoos and scale-softeners. Shampoos containing coal tar, and scale-softening (keratolytic) agents such as salicylic acid or urea, help lift and thin the built-up scale so that other treatments can reach the skin. Softening the scale first also means it can be washed away gently rather than picked off.
Topical steroids and vitamin D creams. Short courses of topical corticosteroids reduce inflammation, and vitamin D analogues such as calcipotriol slow the overproduction of skin cells. The NHS lists both "vitamin D creams, lotions, ointments and gels" and "steroid creams, lotions or gels" among the mainstays, and they are often used together, in scalp-friendly formulations such as gels, foams and solutions.
Stronger treatments for severe disease. Where topical treatment is not enough, the NHS notes that "light therapy and medicines" can be added. For moderate to severe psoriasis this can include phototherapy, tablets such as methotrexate or acitretin, and modern biologic injections, all managed under dermatology supervision.
As the plaques settle, the shedding stops and the hair regrows. Treating the psoriasis is, in effect, the treatment for the hair loss.
How can I protect my hair while managing scalp psoriasis?
Alongside medical treatment, a few gentle habits make a real difference to how much hair you keep through a flare:
Treat flares early rather than letting them become thick and entrenched, since more severe, longer-lasting plaques are the ones linked to hair loss.
Try hard not to scratch or pick. It is easier said than done with an itchy scalp, but scratching and lifting the scale are major contributors to both the shedding and, rarely, the scarring.
Soften scale before removing it, using a medicated or keratolytic product, then wash gently, rather than combing or scraping thick scale out dry.
Be gentle generally: mild washing, careful detangling, and avoiding tight styles, harsh chemical treatments and very hot tools on an already inflamed scalp.
Keep up the treatment your doctor recommends even when things improve, because psoriasis relapses, and controlling it is what keeps the hair loss at bay.
None of this replaces proper medical management, but it works with it, and it is squarely within your control.
Can you have a hair transplant if you have scalp psoriasis?
This is a common and reasonable question, particularly for people who have both scalp psoriasis and separate, ordinary pattern hair loss. The honest answer is that scalp psoriasis does not automatically rule out a hair transplant, but it is a genuine complicating factor that needs careful specialist assessment, and it is not something to gloss over.
The central issue is the Koebner phenomenon: the well-recognised tendency of psoriasis to appear in skin that has been injured, whether by a scratch, a cut or a surgical incision. A hair transplant deliberately creates thousands of tiny wounds in the donor and recipient areas, so in someone prone to it, surgery can trigger fresh psoriasis in exactly the areas being treated. A 2026 review of hair-transplant complications describes how "trauma-induced immune activation through the Koebner phenomenon" can set off inflammatory disease in transplanted skin, and stresses that "careful preoperative clinical and trichoscopic evaluation is essential to exclude preexisting disease" before surgery.
In practice this means a few things. A responsible surgeon will want the psoriasis to be well controlled and stable, and will not usually operate on skin that is actively affected. The donor and recipient areas need to be assessed carefully beforehand. And the decision has to weigh the risk of provoking a flare against the benefit of the transplant. For someone whose psoriasis is quiet and whose hair loss is actually down to a separate cause such as pattern baldness, a transplant may still be perfectly reasonable after proper assessment; for someone with active, unstable scalp psoriasis, it may be better to wait and get the condition settled first. Our guide on why hair transplants fail covers the wider importance of a healthy scalp to a good result.
The key point is that this is a judgement for a qualified surgeon who has examined your scalp, made with your dermatologist's input, not something to decide from an article. If you have scalp psoriasis and are considering a transplant, raise it openly at your consultation so it can be assessed properly.
When should I see a doctor?
It is worth seeing a GP or dermatologist if you have thick, well-defined, scaly patches on the scalp that do not settle with an ordinary anti-dandruff shampoo, if the scalp is sore or the itching is affecting your sleep or daily life, or if you are noticing hair loss. Getting the diagnosis right matters, because scalp psoriasis, seborrhoeic dermatitis and other scalp conditions are treated differently, and because early, effective treatment is the best way to protect the hair. If you ever notice smooth, shiny patches where the skin looks scarred and no longer has any follicle openings, mention this promptly, as that is the uncommon situation where hair loss can become permanent. Our guide on scarring hair loss explains why acting early matters when scarring is a possibility.
Where does this leave scalp psoriasis and hair loss?
For almost everyone, scalp psoriasis and hair loss is a temporary and treatable problem rather than a permanent one. The hair sheds because of inflammation and scratching, not because the follicles are being destroyed, and once the psoriasis is brought under control the hair regrows. Permanent scarring loss is possible but uncommon, and it is largely avoidable by treating the condition properly and being kind to the scalp instead of picking at it. If a hair transplant is on your mind, psoriasis is not an outright barrier, but it is a real factor that a surgeon needs to assess with care.
Because psoriasis is a medical condition that behaves differently from person to person, anyone worried about their scalp or their hair should see a GP or dermatologist, who can confirm the diagnosis and put together the right treatment plan.
Frequently asked questions
Does scalp psoriasis cause permanent hair loss?
Almost never. A 2025 review concludes that hair loss in psoriasis is "almost always non-scarring and reversible", and most people regrow their hair fully once the psoriasis is treated. Permanent, scarring hair loss can happen but is rare, and is usually linked to long-standing, poorly controlled disease, which is why treating it and not picking the scale matters.
Will my hair grow back after scalp psoriasis?
For the great majority of people, yes. The hair loss is usually a form of telogen effluvium caused by inflammation and scratching, which does not damage the follicle, so the hair regrows once the plaques are brought under control. Regrowth follows the normal hair cycle, so it can take a few months to become obvious after the psoriasis settles.
Is scalp psoriasis the same as dandruff?
No. Dandruff and seborrhoeic dermatitis tend to cause finer, greasier, yellowish flaking spread across the scalp, whereas psoriasis causes thicker, drier, sharply defined patches with silvery scale, and often appears elsewhere on the body too. They can occur together, so if flaking is thick, stubborn and well-defined, it is worth asking a doctor which one it is.
Can I have a hair transplant if I have scalp psoriasis?
Not automatically ruled out, but it needs careful specialist assessment. Because psoriasis can appear in injured skin (the Koebner phenomenon), the wounds created by a transplant can trigger new plaques in the treated areas. A surgeon will usually want the psoriasis stable and well controlled, will assess the scalp carefully first, and will not operate on actively affected skin. Raise it at your consultation so it can be judged properly.
How do you stop hair loss from scalp psoriasis?
By treating the psoriasis and being gentle with the scalp. Medicated shampoos, scale-softeners, topical steroids and vitamin D creams calm the plaques, and stronger treatments exist for severe cases, all best guided by a GP or dermatologist. Alongside that, treating flares early, not scratching or picking, softening scale before removing it, and avoiding harsh styling all help protect the hair.
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