What it is
The follicular openings are still present, which is what separates it from a scarring alopecia and is why regrowth is possible. Limited patchy disease is commonly treated with dilute corticosteroid injected into the patch; extent, activity, site and age decide whether that is the right step or whether the conversation moves to systemic treatment.
What this page covers
- Diagnosis, extent scoring and activity assessment of patchy non-scarring hair loss
- Intralesional corticosteroid to scalp and beard patches
- Distinguishing it from tinea capitis, trichotillomania and scarring alopecia
- Screening for associated thyroid disease, vitiligo, iron deficiency and vitamin D
- Eyebrow and beard involvement
- The decision on systemic treatment, including JAK inhibitors — stated openly as prescribed here or referred
- Alopecia areata in children
Who it suits
- Someone with a limited, sharply edged patch, where the examination shows the follicular openings are still there
- Someone willing to have the diagnosis settled before treatment starts; not every round bald patch is alopecia areata
- Someone who can hear plainly that the course is unpredictable, and who comes back for review rather than judging the result in the mirror every morning
- Someone troubled by what she sees, even if the patch is small; the emotional weight of visible hair loss is part of the visit, not a side note to it
- Not you, if what you want is a promise that it will not come back. Nobody can give that: hair can regrow on its own, and a new patch can appear after the first one has settled. That is said before the injection, not after
When we advise delaying or not treating
- A patch that is scaly, crusted, spongy or tender — particularly in a child, and particularly with broken hairs or swollen glands in the neck: it is treated as a fungal scalp infection (tinea capitis) until proven otherwise, and a sample is taken before any treatment. Steroid on a fungal patch spreads it, blurs its shape and makes the diagnosis harder. A spongy, tender patch is not one to watch for a few weeks either: badly inflamed fungal infection leaves scarring hair loss where treatment comes late, so the sample and the treatment are arranged quickly — scalp conditions
- Loss of the follicular openings, or redness and scale around the hair itself: these point to a scarring alopecia, which is a different diagnosis with a different plan. Injecting the patch as though it were alopecia areata will not bring that hair back and can blur the picture before anyone has read it; the pathway there begins with settling the diagnosis, not with a needle
- Hairs broken at different lengths within the patch: that points to repeated pulling rather than to alopecia areata. Injection is not the answer here, and no honest promise of regrowth can be made while the pulling continues
- Complete loss of scalp hair (alopecia totalis) or loss of all body hair (alopecia universalis): the response to injection is poor and injection is the wrong tool at that extent; the conversation moves to systemic treatment or to referral, and that is said openly
- The area around the eye is not injected. Corticosteroid near the eye can raise the pressure inside it and is associated with glaucoma and with cataract, and the eyebrow itself is handled with great caution and a light hand
- A point that has already dipped, lightened, or grown fine thread veins from an earlier injection: we decline to inject it again rather than simply spacing it out
- Active infection in the patch or in the skin over it
- Pregnancy and breastfeeding: JAK inhibitors are not used, and a corticosteroid injection is not urgent here, so it is deferred and discussed rather than started
- Starting a JAK inhibitor with an active or recent infection, tuberculosis or viral hepatitis that is untreated, a previous clot, or a live vaccine due: the baseline screening and the timing come before any prescription
- A request for a promise that it will not return. We decline it, and explain why: the course is unpredictable, and anyone promising otherwise is selling one day of comfort
- A request for JAK inhibitor tablets at the same visit after reading about them, with no baseline screening and no commitment to the monitoring blood tests: we decline that too, and whether the medicine is registered and available here is verified before you are told anything you might plan around
Possible effects
Stated in full, because the decision is not sound without them:
- Tenderness at the injection points for a day or so, pinpoint bleeding, and a brief light-headed feeling during the injection in some people — common and temporary
- A dip in the skin at an injected point: the usual adverse effect of this treatment, caused by thinning of the tissue beneath it. It is reduced by diluting the steroid, spacing the sessions and not returning to the same point, and it often fills back in slowly over months once injections stop — though not in every case
- A pale mark at the injection point, which on deeper skin is both more visible and slower to fade. Same causes, same precautions
- Fine thread veins at an injected point, which can outlast the dip and the fading of the pale mark; the same causes, and the same reason a point is not injected a second time
- Near the eye: raised pressure inside the eye, glaucoma and cataract. These are the reasons the area around the eye is not injected, and the reasons for a light hand at the eyebrow. And very rarely, an injection near the eyebrow can push particles of the medicine into a blood vessel and cause sudden loss of vision in that eye; rare, but an emergency handled in hours
- Infection at an injection site — uncommon; increasing pain, redness, warmth or any discharge needs to be examined, not waited out
- No response in the injected patch, or new patches appearing elsewhere while one is being treated. That is the disease behaving as it does, not the needle failing
- If the conversation moves to JAK inhibitors, this is a drug class carrying the highest level of warning in its approved labeling: serious infection including reactivation of latent tuberculosis and shingles; clots in the leg or the lung; heart attack and stroke; cancers including lymphoma and skin cancers; and a higher rate of death from any cause, seen in a study of another medicine in this class in older patients with rheumatoid arthritis who had a heart risk factor. Blood counts, liver function and lipids can change. That is why nothing starts before screening for tuberculosis and viral hepatitis and a baseline set of blood tests, why those tests are repeated afterward, why live vaccines are timed before starting, and why they are not used in pregnancy or breastfeeding. Hair usually falls again when the drug is stopped, and that is said before it begins, not after
The practical risk here is not a rare complication. It is a patch injected before its diagnosis was settled, or an expectation nobody could meet. Both waste time that cannot be recovered, and the first can hide another condition under the needle. And the injection is one option, not the only one; for some patches the honest answer is to watch and review, and the examination decides which.
A note on darker skin
Alopecia areata itself has nothing to do with skin tone, the injection works the same way in every type, and nothing here depends on melanin in a way that would change the calculation. The difference is in the mark the treatment leaves: the dip, the pale spot and the thread veins at an injection point are far more visible on deeper skin, and any of them can outlast the patch, so the treatment becomes the thing that draws the eye instead of the bald area. That is why the steroid is diluted, why sessions are spaced, and why a point that has already dipped or lightened is not injected again. The pale mark can fade slowly once injections stop, but on deeper skin it is both more obvious and slower to go than on lighter skin, and some of it can stay. That is said before the first injection, not after one has left a mark. If the diagnosis needs a scalp biopsy, the site is chosen within the hair, and the possibility of pigmentation or keloid at the biopsy site in Fitzpatrick types IV to VI is discussed beforehand.
Afterwards
- Mild tenderness at the injection points for a day or so; there is no dressing, and you can wash and style your hair as usual
- Photograph the patch in the same light and at the same angle before each review; regrowth is measured by comparison, not by memory
- New hair often comes back fine and pale at first, then thickens and regains its color; that is not a failed result
- Tell us about: a dip, a pale mark or fine thread veins at an injection point, any increase in pain, redness or warmth there, new patches, or any change in the eyebrows, lashes or nails
- If tablets are part of the plan: keep to the monitoring blood tests, do not stop or restart them on your own, and tell any other doctor treating you — and anyone about to vaccinate you — that you are taking them. Pregnancy is avoided while you are on them, so say before you start if you are planning one, and if you become pregnant or think you might be, tell us the same day rather than deciding on your own
- With tablets, your skin is looked over at reviews as well — the class carries a skin cancer warning — and any new or changing spot is shown to us rather than watched at home
Honestly
The course is unpredictable: it can regrow on its own and it can return, and that is discussed honestly rather than glossed over. Repeated or over-concentrated steroid at the same point leaves a dip and a pale mark that is more visible on deeper skin, so injections are diluted and spaced and the area around the eye is avoided; extensive, rapidly progressive or childhood disease is a prescribe-or-refer decision made explicitly, and the emotional weight of visible hair loss is treated as part of the visit, not as a side issue.
Common questions
The hair grew back white and fine. Is that normal?
Yes, and it is common. New hair in alopecia areata often starts out fine and pale, then thickens and regains its color gradually. Do not judge it at the first review; we photograph it and compare.
Will it come back after it clears?
It may and it may not, and nobody can tell you in advance. The course is unpredictable: hair sometimes regrows on its own, and a new patch sometimes appears after the first has settled. Anyone promising you otherwise is not telling you the truth.
I read about new tablets for alopecia areata. Can I have them?
We can discuss them, though usually not at the same visit. Before starting, screening for tuberculosis and viral hepatitis and a baseline blood count, liver function and lipids are needed, with monitoring blood tests afterward and a frank discussion of the infection and clot warnings; they are not used in pregnancy or breastfeeding. You are told plainly whether they are prescribed here or you are referred, and whether they are registered and available at all. Hair usually falls again when they are stopped.
My son has a bald patch. Can I put a steroid cream on it?
No — have him seen first. In a child, fungal scalp infection (tinea capitis) and hair pulling are excluded before any diagnosis, and a sample is taken if the patch is scaly, spongy or tender. Steroid on a fungal patch spreads it and blurs its shape, which makes the diagnosis harder and the treatment longer. If it does turn out to be fungal, it is treated with medicine taken by mouth — a cream alone does not reach the follicle — and the rest of the household, and any pet, is checked, with combs and head coverings kept to one person.
Does the injection leave a dent?
It can, and that is the usual adverse effect of this injection. It is reduced by diluting the steroid, spacing the sessions and not returning to the same point. If a dip, a pale mark or fine thread veins appear, we stop injecting that spot and review the plan rather than carrying on over it.
I have a gap in my eyebrow. Will you inject it?
We handle the eyebrow with great caution and a light hand, and the area around the eye is not injected. Corticosteroid near the eye can raise the pressure inside it and is associated with glaucoma and cataract — that is a medical reason, not a cosmetic reservation. If the gap sits right against the lid, we talk about a different option.