Alopecia areata: understanding bald patches and treatment options

What does alopecia areata look like?

A typical patch is round or oval, with a fairly clear border and a smooth surface. It may remain isolated, enlarge or merge with nearby patches. Short hairs that narrow towards their base, known as exclamation mark hairs, are sometimes found at the edge; a dermatologist can look for these during the examination.

Hair loss may involve the scalp, beard, eyebrows or eyelashes. Small pits or roughness of the nails can accompany it, although many people have no nail changes. Tingling or itching can occur, but marked redness, crusting or persistent pain should prompt an assessment for other possible causes as well.

The names of different forms describe where hair is lost: alopecia totalis affects the whole scalp, while alopecia universalis also involves body hair. An ophiasis pattern forms a band around the back and sides of the head. Diffuse presentations can be harder to recognise, so hair loss spread across the scalp does not automatically rule out alopecia areata.

These patterns are not inevitable stages of progression: a small patch does not necessarily lead to complete hair loss. There are also several other explanations for patchy hair loss, including fungal infection, repeated tension and hair pulling. Comparing your scalp with an online photograph cannot reliably distinguish between these conditions.

Why does the immune system affect hair growth?

In alopecia areata, immune cells interfere with follicles that were previously producing hair normally. This interrupts growth without usually destroying the follicle’s ability to make another hair. It differs fundamentally from scarring alopecia, in which destroyed follicles cannot regrow hair.

Genetic susceptibility plays a part, but having an affected relative does not mean that you will develop the condition. Environmental influences probably contribute to its onset, with considerable uncertainty about their role in an individual case. Stress may feature in the history of a flare, but it cannot explain every episode, and developing alopecia areata is not your fault.

Alopecia areata is not contagious and does not result from poor hygiene. It can affect children and adults, sometimes alongside autoimmune thyroid disease, vitiligo or atopic conditions. It also differs from androgenetic alopecia, where hairs gradually become finer in a characteristic pattern, although both conditions can occur in the same person.

How is the diagnosis confirmed?

Arrange a GP appointment for a new bald patch, rapidly spreading hair loss or thinning eyebrows and eyelashes; referral to dermatology may be needed. In a child, broken hairs accompanied by a scaly scalp raise the possibility of a fungal infection that needs a different treatment. Shiny areas, inflammation or ongoing pain also require assessment for a scarring disorder.

The clinician examines your scalp, other affected areas and nails, and asks when the hair loss began, about your medical history and any medicines you use. Trichoscopy uses magnification to inspect the hairs and follicular openings more closely. These findings often establish the diagnosis without routinely taking a tissue sample.

Fungal testing may be appropriate when infection is suspected, while a biopsy can help if the appearance remains uncertain. Blood tests should answer a specific question, such as whether symptoms suggest a thyroid disorder or a nutritional deficiency is plausible. Extensive vitamin and autoimmune testing without a clinical reason is not necessary for every bald patch.

Assessment goes beyond the size of the bare area to include the speed of change, duration, nail and eyebrow involvement, and how you are coping. The SALT score measures the proportion of scalp affected by hair loss, but cannot capture the whole personal impact. Since alopecia covers several different conditions, a precise diagnosis helps avoid using a treatment intended for another cause of thinning.

Can the hair grow back and stay?

Because the follicles remain, visible hair loss can be followed by regrowth. Early hairs may be fine or white before becoming thicker and sometimes regaining their colour. This does not establish a deadline for recovering your previous density, or mean that every patch will respond in the same way.

Spontaneous regrowth is possible, particularly in some limited forms, but new patches can develop elsewhere. Extensive or longstanding disease, and disease starting early in childhood, tend to have a more difficult course; these are general associations rather than a prediction for one person. Improvement during treatment also does not establish a permanent cure, and hair loss can return after treatment stops.

Follow-up helps distinguish ongoing spread, stability and regrowth, ideally using comparable photographs taken at agreed intervals. For a small area of hair loss, monitoring without immediate medication may be a reasonable choice to discuss with your clinician. That approach should include a review appointment and advice about making contact sooner if the condition worsens.

Which treatments are used for limited patches?

Topical corticosteroids are among the treatments used to reduce inflammation around affected follicles. The preparation, strength and length of use depend on factors including age and the area being treated. Facial skin and eyelids need particular care: do not apply a scalp prescription there unless the prescriber has specifically advised it.

A dermatologist may also inject a corticosteroid into selected patches, particularly when only a limited area is involved. Injections can be uncomfortable and may cause local skin thinning or changes in pigmentation. Choosing between a topical preparation and injections therefore involves tolerability, the location of the patches and your preference, followed by assessment of the response.

Specialist centres may offer contact immunotherapy, where a sensitising substance is applied under a protocol to produce a controlled skin reaction. It involves repeated visits and can cause significant eczema or changes in skin colour. Availability varies, and the approach should never be copied with irritating products bought for home use.

Minoxidil is sometimes added to a plan intended to encourage regrowth, but it does not replace treatment directed at immune activity. Its use for alopecia areata may be outside the licensed indication, depending on the preparation and country. Results in ordinary pattern baldness cannot predict how an alopecia areata patch will respond, so ask what each prescribed treatment is expected to contribute.

What do JAK inhibitors offer for severe alopecia areata?

JAK inhibitors affect signalling pathways involved in the immune response. They have expanded treatment options for severe alopecia areata, allowing some patients to achieve regrowth, although a complete response does not occur in everyone. A specialist assessment determines whether they are appropriate, rather than the presence of a bald patch alone.

Current European product information authorises ritlecitinib and baricitinib for severe alopecia areata in adults and adolescents aged 12 and over, but this does not make them interchangeable. For NHS care in England, NICE recommends ritlecitinib as an option from age 12 within its marketing authorisation and subject to its commercial arrangement. European authorisation and NHS funding are separate matters, and your dermatology team should explain which treatments can be accessed through your local service.

Before treatment, the specialist assesses infection risks, reviews vaccinations and arranges the relevant blood tests. These medicines can increase the risk of infection and carry warnings about blood clots, certain cardiovascular events and cancers. In people aged 65 or over, or with specified cardiovascular or cancer risk factors, the product information restricts their use to situations where no suitable treatment alternative is available.

Tell the prescriber about pregnancy plans, breastfeeding, any previous blood clot and all medicines you already take. Contraception requirements, contraindications and monitoring schedules depend on the particular medicine, and checking them is part of prescribing safely. Treatment duration is reviewed against benefit, adverse effects and disease activity, without promising lasting regrowth after stopping.

Other systemic treatments, including short courses of corticosteroids or certain immunosuppressants, may be considered according to the pattern and progress of the condition. Some uses are off-label and need a clear explanation of the expected benefits and risks. A treatment proposal should explain how improvement will be measured and what would lead to continuing, changing or stopping it.

Can diet and stress management prevent another episode?

No dietary approach has reliably been shown to prevent alopecia areata flares. A varied diet supports general health, and a confirmed deficiency deserves appropriate treatment. Routinely excluding dairy, coffee or sugar, or taking multiple hair supplements, is not an established treatment for this autoimmune condition.

Studies have found lower levels of certain nutrients in some affected groups, without establishing that routine supplementation restores hair growth. A blood test is useful when it addresses a medical question and could change management. Essential oils and other products sold as natural can also irritate the skin; being available without a prescription does not establish either effectiveness or safety.

Psychological support, suitable physical activity or relaxation techniques may help you manage uncertainty and sleep more comfortably. Their value for wellbeing does not mean a recurrence reflects inadequate efforts to control stress. Mention persistent anxiety, social withdrawal or a child’s difficulties at school during the consultation so these concerns can be addressed alongside the hair loss.

How can you protect bare areas day to day?

An uncovered scalp is more exposed to sunlight and cold, so appropriate sunscreen, a hat or a scarf can improve comfort. If eyelashes are lost, glasses help shield the eyes from wind and dust. Persistent eye irritation needs medical advice, particularly before using a product close to the eyes.

Wigs, hairpieces, concealing powders and eyebrow make-up can be used alongside medical care. They do not alter immune activity, but may make work and social situations easier to navigate. Whether to cover the patches or leave them visible is your choice, and that preference can change over time.

For a child, speaking with the school and discussing any teasing can form part of practical support. For an adult, mentioning difficulties at work or within intimate relationships can help shape the care offered. These needs remain valid even when other people consider the affected area small.

Is a hair transplant appropriate for alopecia areata?

Active alopecia areata is not an indication for a hair transplant. Moving follicles does not remove the immune process that can affect them, and the NHS describes transplantation as generally unsuitable for this condition. A period without new patches is therefore not enough, by itself, to establish that surgery would be appropriate.

If another cause of hair loss is present as well, it needs to be assessed separately from alopecia areata. Our hair transplant guide explains the factors involved in surgical suitability, including the condition of the scalp and donor area. Those criteria cannot replace dermatological advice about a current or previous autoimmune hair disorder.

At Body Expert, if you enquire about a hair transplant in Istanbul, disclose previous alopecia areata episodes and the treatments you have received at the initial assessment. Your diagnosis and its course should guide the next step before any surgical decision. For alopecia areata, the priority is a dermatological plan suited to disease activity and the changes that matter to you.

Sources

Sibbald, C. (2023). Alopecia Areata: An Updated Review for 2023. Journal of Cutaneous Medicine and Surgery, 27(3), 241–259. https://doi.org/10.1177/12034754231168839

National Institute of Arthritis and Musculoskeletal and Skin Diseases. (2024). Alopecia Areata: Diagnosis, Treatment, and Steps to Take. https://www.niams.nih.gov/health-topics/alopecia-areata/diagnosis-treatment-and-steps-to-take

European Medicines Agency. (2026). Litfulo: EPAR and product information. https://www.ema.europa.eu/en/medicines/human/EPAR/litfulo

European Medicines Agency. (2026). Olumiant: EPAR and product information. https://www.ema.europa.eu/en/medicines/human/EPAR/olumiant

National Institute for Health and Care Excellence. (2024). Ritlecitinib for treating severe alopecia areata in people 12 years and over (TA958). https://www.nice.org.uk/guidance/ta958/chapter/1-Recommendations

NHS. (n.d.). Hair transplant. Retrieved 16 October 2026. https://www.nhs.uk/tests-and-treatments/cosmetic-procedures/cosmetic-surgery/hair-transplant/