Evidence checked, 25 October 2026. General information, not individual medical advice.
What is tinea capitis, and can scalp ringworm cause hair loss?
Tinea capitis is a fungal infection of the scalp and hair, also called scalp ringworm. It can cause scale, itch, redness, broken hairs and patches of hair loss. Some cases cause a painful inflamed swelling. It needs medical assessment and usually an oral antifungal treatment; shampoo alone cannot reach the infection inside the hair follicle. [1]
Despite the name, ringworm is not caused by a worm. It is not the same as ordinary pattern thinning, and a hair-growth treatment does not remove the infection. The best next step is to identify the cause of the scalp change and treat it before considering hair restoration.
Ask the team about assessment for scalp changes
What signs might suggest scalp ringworm?
Tinea capitis does not always look like a neat ring. It may cause a scaly patch with reduced hair, hairs broken close to the scalp that look like black dots, or more diffuse dandruff-like scale. Some cases have pustules or marked inflammation. [1]
Those appearances overlap with other conditions. Alopecia areata, eczema, psoriasis, bacterial folliculitis and other scalp disorders may need consideration. The pattern, examination and sometimes laboratory testing help distinguish them. A photograph can document the change but cannot reliably identify which fungus is involved.
If you are noticing a new patch, write down when it appeared and whether it is spreading. Mention contact with someone who has a similar scalp problem or an animal with skin disease. These details help the assessment, but absence of a known contact does not exclude an infection.
Can adults get it, or is it only a childhood condition?
It is most common in children before puberty, but adults can be affected too. A 2024 review in the Journal of Fungi describes adult disease as an often overlooked diagnosis that can be mistaken for other scalp conditions. Risk depends on exposure and individual circumstances. Do not dismiss a possible scalp infection solely because you are an adult, and do not assume that every child's patch of hair loss is ringworm. [1,4]
If the concern is for a child, tell the service their age before arranging care. Ask whether that service provides the appropriate paediatric assessment. A clinic's adult hair-restoration appointment is not automatically the right route for a child with scalp disease.
People with reduced immunity should mention this promptly. The clinician may need a different investigation or treatment plan. The aim is to choose the correct medical pathway rather than fit every scalp complaint into a cosmetic booking.
How does it spread?
Dermatophyte fungi can spread through contact with an infected person or animal and through contaminated objects. Combs, brushes and other items that contact the scalp can matter. Different fungal species have different usual sources, so an exposure history can be helpful. [1]
Until you have advice, avoid sharing combs, brushes, hats and towels. Do not attempt to examine other people's scalps with the same unclean tool. If there may be an animal source, discuss veterinary advice rather than treating the animal with a human medicine.
The clinician can explain whether household contacts need assessment and what cleaning measures are sensible. Follow advice specific to the diagnosis and treatment. Do not rely on a generic internet rule about when it is safe to return to school or work, because the circumstances and local guidance may differ.
How is tinea capitis diagnosed?
A clinician examines the scalp and hair. Microscopy and fungal culture of scale and affected hairs can help confirm the diagnosis and identify the organism. Trichoscopy, a magnified scalp examination, can provide useful clues. Some fungi fluoresce under a Wood's lamp, but a negative lamp examination does not exclude every type of scalp ringworm. [1]
Testing and treatment timing depend on the appearance and severity. A markedly inflamed scalp may need action before a culture is back. Ask what is being tested, how results will be shared and whether the treatment plan might change when the organism is identified.
Bring a list of medicines, allergies and previous scalp treatments. Tell the clinician if a product seemed to suppress redness without stopping the hair loss, or if the problem has recurred after treatment.
Why is shampoo alone not enough?
The infection involves the hair shaft and follicle, which topical products do not adequately reach. Oral antifungal treatment is normally needed. A clinician selects the medicine and course according to the likely or confirmed organism, age, medical history and other medicines. [1]
Shampoo may be recommended alongside oral treatment to reduce fungal spread, but it is not a replacement. Do not buy a cosmetic scalp package on the assumption that it will clear the infection. Do not use leftover tablets or another person's prescription.
Ask how long treatment is expected to last, whether any monitoring is needed and what to do if side effects occur. Take the treatment as prescribed and attend the planned review. Stopping as soon as the scalp looks better may not be the same as completing an appropriate course.
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Will the hair grow back?
Hair can recover when the infection is treated and follicles have not been permanently damaged. Severe inflammatory disease can scar and cause lasting loss. This is why early assessment matters, particularly with a tender boggy swelling called a kerion. [1]
No photograph or brief enquiry can promise regrowth. A clinician needs to judge whether the loss is due to broken hairs, temporary shedding or scarring, and whether another condition is present as well. Improvement in the infection and visible recovery of hair are not necessarily simultaneous.
If the scalp settles but density remains reduced, ask for follow-up rather than assuming the infection is still active or booking PRP immediately. The next question is what explains the remaining loss.
Does PRP have a role in treating scalp ringworm?
PRP does not replace antifungal treatment. Research about PRP for androgenetic alopecia concerns a different condition and does not show that it eradicates a fungal scalp infection. [1,2]
The responsible hair-restoration sequence is assessment, appropriate treatment of active scalp disease and a review of any remaining thinning. If you later have a separate diagnosis of pattern hair loss, the options can be discussed on their own evidence and merits. There is no need to commit to a course of injections before the infection has been understood.
The London PRP Clinic's service page describes a doctor-led hair and scalp assessment. Ask whether it is suitable for your concern and whether GP or dermatology care should come first. Enquiring does not confirm suitability for PRP. [3]
When should I seek prompt help?
A painful boggy swelling, pus, rapidly worsening inflammation, fever or feeling unwell needs prompt medical assessment. Do not wait for a cosmetic appointment if the scalp is becoming very painful or the loss is spreading quickly. A child or someone with reduced immunity may need particular care. [1]
For a new scaly patch or unexplained broken hairs, arrange a review rather than repeatedly trying dandruff products. The earlier the cause is recognised, the sooner you can have an appropriate treatment and follow-up plan.
What should I prepare before an appointment?
Note the start date, symptoms, spread, previous treatments and possible contacts. Ask how to send photographs securely. Confirm the assessment fee, available appointment and whether that clinician can provide the right investigation or referral. Tests and specialist treatment should not be assumed to be included in a hair-restoration package.
Useful questions are: what makes this likely to be ringworm rather than another condition; is a sample needed; what treatment and monitoring are appropriate; do household contacts need advice; and how will we check that it has resolved?
A clear answer is more valuable than treating an unexplained patch with increasingly expensive hair products.
Enquire about the right scalp-care pathway | Email the team
Sources
DermNet, tinea capitis: diagnosis, treatment and complications
PLOS ONE, PRP and topical treatment for androgenetic alopecia, systematic review (2024)
The London PRP Clinic, services and hair-assessment enquiries
Journal of Fungi, comprehensive review of tinea capitis in adults (2024)
British Association of Dermatologists, tinea capitis patient information