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Dr. Chrysoula I. Liakou MD, PhD
- Treated online: Yes, usually. Ringworm of the body, groin and feet is one of the most photo-recognisable rashes and is treated with antifungal creams or tablets after video review; scalp ringworm, infection spreading despite treatment, and weakened immunity need in-person care.
- What it is: an infection of the dead outer skin by dermatophyte fungi, named for its ring shape; it is caught from an infected person, from kittens, puppies, guinea pigs and farm animals, and from changing-room floors, mats and shared towels.
- How long: body and groin ringworm clears within 2 to 4 weeks of antifungal cream, continued 1 to 2 weeks after the rash has gone; scalp ringworm needs antifungal tablets for 4 to 8 weeks, and it stops being contagious soon after treatment starts.
- The steroid trap: a steroid cream alone hides ringworm while the fungus spreads, turning the classic ring into a patchy, misleading rash called tinea incognito; it still clears once the steroid stops and an antifungal starts.
- Pets and feet: an untreated pet with patchy fur loss, or untreated athlete's foot reseeding the groin on towels and hands, is behind most ringworm that keeps coming back, so both are treated at the same time.
- Emergency: ringworm is never an emergency; call 112 only if a secondarily infected area comes with high fever, confusion or rapid breathing.
See a doctor in person instead if the scalp is involved, above all in children, because scalp ringworm needs antifungal tablets and often a laboratory sample before treatment.[2] Do the same if the rash keeps spreading despite treatment, or if your immune system is weakened by illness or by medicines such as chemotherapy, biologics or high-dose steroids.
Can an online doctor treat ringworm?
Often, yes. Ringworm is one of the most photo-recognisable rashes, so clear pictures plus a video consultation can often provide enough information to diagnose it and prescribe antifungal treatment. Scalp ringworm is the main exception: it needs antifungal tablets and usually in-person testing.
Because the diagnosis rests on how the rash looks, a clear photo does most of the work. On Mobi Doctor, a licensed doctor can confirm it, separate it from the conditions that mimic a ring, prescribe after assessing you, and give you a plan to stop it spreading through your household.
Listen: Ringworm Treatment Online
The audio version of this topic from the Mobi Doctor podcast. Open the episode.
How an online consultation helps with ringworm
- Made for photo diagnosis: the expanding ring with a raised, scaly border is one of the most recognisable patterns in skin medicine, and a sharp photo of that border is usually all the doctor needs.
- Look-alikes ruled out: discoid eczema, psoriasis, pityriasis rosea and the bullseye rash of Lyme disease can all mimic a ring. Telling them apart changes everything about treatment.
- The right antifungal for the right site: body, groin, feet and nails need different drugs and durations, and the doctor explains honestly why creams stop short at the scalp.
- A stop-the-spread plan: ringworm loops through households, gyms and pets. You leave with practical steps that break the reinfection cycle, not just a prescription.
📷 Photograph the whole patch in daylight, then take a close-up of its edge: the active, scaly border is where the diagnosis lives. Include any other patches, between the toes and in the groin included, because the same fungus often travels between sites. If you have already applied any cream, especially a steroid cream, say so in the booking notes.
What the doctor checks in an online ringworm consultation
The assessment is structured around the features that make or break the diagnosis. In a ringworm consultation, the doctor will typically assess:
- The edge of the rash: a raised, scaly, advancing border with a calmer centre is the diagnostic feature, so the close-up photo of that border carries the assessment.
- How it has behaved: steady outward growth over days to weeks, and whether new patches have appeared elsewhere.
- Other body sites: feet, groin and nails, because the same fungus travels between sites and untreated athlete's foot commonly reseeds a groin patch.
- Likely sources: pets with patchy fur loss, gyms and contact sports, shared towels, and affected household members.
- What has been applied: antifungal, combination and especially steroid creams, which change how the rash looks and can hide the ring (tinea incognito).[1]
- Whether tablets are the safer choice: patch size, number, site and skin thickness, plus your other medicines and liver health, because oral antifungals interact with several common drugs.[3]
- Photo quality: daylight, clean and cream-free skin, one wider shot of the whole patch and one sharp close-up of the border; on the video call the doctor may ask you to angle the light so the scale shows.
What does ringworm look like, and where does it appear?
Ringworm looks like a round or oval patch that grows outward, with a red, scaly, slightly raised border and a paler, clearer centre: the reason for the ring. It is usually itchy. On darker skin it is often brown, grey or violet rather than red. Despite the name, no worm is involved; it is a fungal infection.
The classic ring
It usually starts as a small, round, itchy patch that grows outwards over days to weeks, and several rings can merge into wavy map-like shapes. Doctors call this tinea corporis when it sits on the trunk, arms or legs.[1] The steady outward spread with central clearing is the single most useful clue that separates it from eczema and psoriasis.
Groin, feet, scalp and nails
The same family of fungi causes jock itch (tinea cruris), an itchy, sharply bordered rash in the groin folds and inner thighs that is common in athletes and hot weather, and athlete's foot (tinea pedis), with itchy peeling between the toes.[4] On the scalp (tinea capitis), mainly in children, it causes scaly patches, broken hairs and patchy hair loss, sometimes with a boggy, painful swelling called a kerion; scalp infection always needs oral treatment and belongs in in-person care.[2] Thickened, crumbly nails are the most stubborn site, needing months of treatment.
Is it ringworm or something else?
Not every round, scaly patch is ringworm. Discoid eczema is coin-shaped but scaly all over with no central clearing, and it itches intensely; psoriasis forms a well-defined plaque with silvery scale throughout; and the target rash of early Lyme disease follows a tick bite. The tell of ringworm is an active edge that keeps expanding while the centre clears.
Swipe sideways to compare →
| Feature | Ringworm | Discoid eczema | Psoriasis |
|---|---|---|---|
| Shape | Ring with clearer centre, expands outward | Coin-shaped, scaly throughout | Well-defined plaque, scaly throughout |
| Edge | Active, raised, scaly border | Uniform, may weep or crust | Sharp, silvery scale |
| Number | Often one or a few | Frequently several | Often symmetrical on elbows, knees, scalp |
| Clue | Spreads outward, contact with pets or gyms | Very itchy, dry skin tendency | Nail pitting, family history |
If the patch does not behave like ringworm (no clearing centre, or spreading despite antifungal cream), the photo assessment is how the doctor changes course, and a steroid cream should never be used on an undiagnosed ring.
How it spreads, and the steroid-cream trap
People, pets and shared surfaces
Ringworm passes by direct skin contact and via towels, bedding, clothing, sports mats, changing-room floors and grooming tools, because the fungus survives on shed skin flakes. Pets matter: kittens, puppies, guinea pigs and farm animals with patchy fur loss are classic sources, and an infected animal quietly reinfects the household until a vet treats it. Feet deserve special mention, because untreated athlete's foot is the usual reason groin ringworm keeps returning.[4]
Tinea incognito: why steroid cream makes it worse
A steroid or combination cream is the single most common wrong turn. It suppresses the redness and itch, so the patch looks better for a week or two while the fungus spreads underneath. The ring loses its tell-tale edge and becomes a patchy, odd-looking rash, called tinea incognito, that is harder to recognise and slower to clear.[1] Never put a steroid cream alone on an undiagnosed ring; if you already have, simply tell the doctor, because it changes what they look for.
Preventing spread and reinfection
Stopping reinfection is half the battle with ringworm. Keep the affected skin clean and thoroughly dry, use your own towel and wash it hot, do not share hairbrushes, clothing or sports kit, and wear flip-flops in shared showers and changing rooms. Treat athlete's foot at the same time as any body or groin rash, and check pets for scaly or bald patches.
Fungi thrive in warmth and moisture, so drying carefully after washing and sport, changing out of sweaty clothes, and choosing breathable fabrics all reduce the chance of a fresh patch. If several people in a household are affected, which is common with a shared pet or gym, treating everyone at once and washing bedding and towels stops the infection ping-ponging between you.
Ringworm in children, pregnancy and while travelling
In children, body ringworm is treated much as in adults, but scalp ringworm is largely a childhood infection and needs oral antifungals and usually in-person testing, so a scaly, patchy, hair-losing scalp in a child should be seen in person rather than online.[2] In pregnancy, topical antifungal treatment is preferred and oral antifungals such as terbinafine and itraconazole are generally avoided, so tell the doctor if you are pregnant or breastfeeding.[3]
Ringworm is a common travel souvenir: hot, humid climates, shared accommodation, gym mats and swimming pools all favour it, and athlete's foot picked up abroad often seeds a groin or body patch weeks later. For expats and travellers, a photo consultation means you can have a spreading ring assessed and treated wherever you are, with any prescription usable at a pharmacy near you after the consultation, instead of hunting for a local clinic mid-trip.
How long does ringworm last?
Ringworm on the body usually improves within a week or two of starting an antifungal cream, but treatment must continue for the full course, often one to four weeks depending on the product, and a little beyond the point the skin looks normal.[3] Scalp and nail infections take much longer, needing weeks to months of tablets.
Stopping treatment as soon as the rash fades is the most common reason it comes back, because the fungus lingers in skin that looks healed. Follow the packet or prescription to the end. If a patch is no better after two weeks of correct treatment, or is still spreading, book a review: the diagnosis may need rethinking, a steroid cream may have masked it, or a stronger topical or oral antifungal may be needed.[5]
Which ringworm treatment might the doctor recommend?
Treatment follows the site and the story: creams for most body and groin patches, tablets where patches are many, thick or stubborn, and in-person testing before oral treatment of scalp and nails. This is the framework the doctors use, aligned with the cited guidance:[3]
Swipe sideways to compare →
| Presentation | Likely first step | Suitable for online care? | When referral or in-person care is needed |
|---|---|---|---|
| Single classic ring on body or groin | Topical antifungal cream: terbinafine for 1–2 weeks, or clotrimazole or miconazole for up to 4 weeks | Usually yes | No improvement after two weeks of correct use, or the diagnosis is unclear |
| Multiple, large or thick-skinned patches, or failed cream treatment | Assessment for oral antifungal tablets after a medicines and liver-health check | Usually yes, case-dependent | Where local pathways require testing before tablets, or interactions need in-person review |
| Scalp involvement, mainly in children | Oral antifungal treatment, usually with laboratory confirmation first[2] | No: assessment and referral only | Always; scalp ringworm is not treated with creams alone |
| Ring distorted by previous steroid cream | Careful reassessment for tinea incognito, then an antifungal course, often longer | Often, case-dependent | If the diagnosis stays uncertain, skin scrapings in person settle it |
| Boggy, tender, oozing scalp swelling (kerion) | Same-day in-person care | No | Always; a kerion risks permanent hair loss without fast treatment |
Not sure which row is your rash? A doctor can tell you in one consultation.
See available times →Treatment options for ringworm
What you can do yourself
For a small, classic patch on the body, pharmacy antifungal creams work well: terbinafine typically for one to two weeks, or clotrimazole and miconazole for up to four, continuing a little beyond the visible clearing exactly as the packet directs.[3][5] Keep the area clean and thoroughly dry, wash towels and bedding hot, stop sharing them, wear flip-flops in shared showers, and treat athlete's foot at the same time as any groin rash. One thing that never helps is antibiotics: ringworm is a fungus, and antibacterial medicines do nothing against it.
Prescription treatment
A prescription is never issued without a consultation. The doctor assesses the rash and your history first. Where patches are large, multiple, on thick skin or not clearing with pharmacy creams, the doctor can then prescribe stronger topical antifungals or a course of terbinafine or itraconazole tablets, after checking your other medicines and liver health, because oral antifungals interact with several common drugs.[3] Scalp and nail infections are treated orally from the start, and scalp cases usually merit laboratory confirmation in person first. Occasionally a short combined antifungal-plus-mild-steroid cream calms severe itch, but only ever alongside the antifungal, never instead of it. In pregnancy, topical treatment is preferred.
When ringworm is treated online, and when you need in-person care
Treated online: classic body and groin ringworm; athlete's foot, including when it keeps reseeding the groin; larger or stubborn patches that may justify tablets after a medicines check; suspected tinea incognito after steroid cream, where the history makes the diagnosis; and reviews when a patch is not clearing on schedule.
In-person care: scalp ringworm, especially in children, which needs oral treatment and usually laboratory confirmation in person; a kerion, the same day; nail infections where local pathways require testing before months of tablets; spreading infection in anyone immunocompromised; and any ring that keeps behaving wrongly despite correct treatment, where skin scrapings settle the question. In those cases the consultation buys you a clear next step, not another cream.
When to get in-person care
Ringworm itself is rarely dangerous. Get prompt in-person care for a kerion (a boggy, tender, oozing scalp swelling), for infection spreading fast despite treatment, or for any worsening rash if you are immunocompromised. If a secondarily infected area comes with high fever, confusion or rapid breathing, call 112 immediately.
Treating ringworm at home: what helps and what does not
Honest answer: for a single patch of body ringworm, home treatment is usually the right treatment. Pharmacy antifungal creams clear most patches within two to four weeks, used for the full course even after the ring fades, alongside washing towels and clothing and not sharing them.
What home care cannot do: creams cannot reach ringworm of the scalp or nails, which need prescription oral antifungals, and they cannot help when the diagnosis is wrong, because eczema, psoriasis and discoid rashes imitate rings. Ringworm that is spreading, returning or not clearing after four weeks of proper cream deserves a doctor’s eye.
Staying at home is the point of Mobi Doctor: you can see a licensed doctor over video, usually within 15 minutes, with no waiting room. If medication is the right answer, the prescription follows. Book a video consultation: the exact price is shown before you pay.
Is ringworm contagious?
Yes, easily. Ringworm is a fungus, not a worm, and it spreads by skin contact, shared towels, clothing, gym mats and equipment, and from infected pets, whose patches are worth checking too.
How long are you infectious? Until treatment is underway: infectiousness drops sharply once proper antifungal treatment has started, usually within about 48 hours. Until then, keep the patch covered where practical, wash towels and bedding hot, and do not share them.
Gyms and contact sports: most return once treatment is established and the area can be covered; stubborn or scalp ringworm needs a doctor first.
How Mobi Doctor works
- Book a time that suits you: open daily 7am–11pm CET. You can see a doctor over video, usually within 15 minutes. No subscription, exact price up front.
- Upload your skin photos, then speak to a licensed doctor: a private video call: you describe what you feel, the doctor asks what matters, and you agree the right plan together.
- Leave with your plan: everything agreed before you hang up: your plan, and a prescription to use at a pharmacy near you where medication is clinically right for you. If your doctor decides you need to be seen in person, you get a full refund.
No sign-up needed
Not sure it’s ringworm? Tick every symptom you have to see each condition page that mentions it. It finds the right page, not a diagnosis: a doctor gives you that on a video call.
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Similar symptoms, different condition? Fungal Skin Infection can start the same way. Compare them, or look up any other symptom in the full symptom checker.
Frequently asked questions about ringworm
What is ringworm, and is it really a worm?
Ringworm is a fungal infection of the skin, hair or nails caused by dermatophyte fungi, and no worm is involved: the name comes from the ring-shaped rash the fungus produces as it spreads outward and clears in the centre. Its medical name is tinea, with the body site added: tinea corporis on the body, cruris in the groin, pedis on the feet and capitis on the scalp.
How do you catch ringworm?
Ringworm is caught by skin contact with an infected person, by stroking a kitten, puppy, guinea pig or farm animal with patchy fur loss, by walking barefoot on changing-room floors and pool sides, by sharing towels, bedding, combs, hats or sports mats, and occasionally from soil. Warm, damp, sweaty skin under tight clothing gives the fungus its foothold, and contact sports pass it readily.
What does ringworm look like, and where does it appear?
Ringworm on the body is a round or oval red, scaly, itchy patch that spreads outward with a raised, sometimes bumpy edge and a clearer centre, giving the ring. In the groin it is a red-brown, defined rash spreading down the inner thighs; on the feet it peels and cracks between the toes; on the scalp it causes scaly patches with broken hairs; on nails it thickens and crumbles them.
Can an online doctor prescribe antifungal treatment for ringworm in Europe?
Yes, provided a consultation comes first. The doctor confirms the ringworm from your photos by video, then prescribes an antifungal cream, or tablets for widespread or stubborn ringworm, for collection at a pharmacy near you. Scalp ringworm is the exception: it is sent for in-person testing before tablets, because shampoos alone do not clear it.
How long is ringworm contagious?
While the rash is active and untreated, ringworm spreads through skin contact and shared towels, bedding or sports kit. Once effective antifungal treatment has started, the risk drops quickly, and most guidance allows normal work, school and sport straight away, with the patch covered for contact sport, no shared towels, and hand washing after touching it until it has fully cleared.
I have been putting steroid cream on the ringworm. Does that matter?
Yes, tell the doctor exactly what you used and for how long. Steroid creams calm the redness while letting the fungus spread, and they distort the classic ring into something patchy and misleading, called tinea incognito. It remains very treatable: stop the steroid, start an antifungal, expect the rash to look briefly worse as the inflammation returns, and send a skin scraping if the diagnosis is unclear.
Do I need to treat my pet for ringworm too?
Possibly. Kittens, puppies, guinea pigs and other pets are common sources of ringworm, and reinfection continues until an infected animal is treated by a vet. Check pets for patchy fur loss or scaly, crusty areas, wash your hands after handling them, keep them off beds until treated, and mention animal contact in the consultation, because ringworm caught from animals is often more inflamed.
Can a doctor treat my child's ringworm online?
Not at the moment: Mobi Doctor sees adults aged 18 and over only, so a child's ringworm is assessed in person by a paediatrician or a local doctor. The treatment principles are the same as in adults, and children can return to school or nursery once treatment has started. Scalp ringworm in children always needs tablets, so it should not be treated with a cream alone.
Why does ringworm in my groin keep coming back?
Usually because untreated athlete's foot keeps reseeding it: the fungus travels from feet to groin on towels and hands. Treat both areas at the same time, dry your feet last when towelling or use a separate towel, put socks on before underwear, wash underwear and towels hot, and finish the full course of antifungal rather than stopping when the groin ringworm fades.
How long does ringworm take to clear?
Ringworm on the body or groin clears within two to four weeks of an antifungal cream, continued for one to two weeks after the rash has gone because fungus lingers in healed-looking skin. Ringworm on the feet takes about four weeks, scalp ringworm four to eight weeks of tablets, and nail ringworm six to twelve months. A patch not improving after four weeks needs a scraping and review.
What can I do at home for ringworm?
At home, apply the antifungal to the ringworm patch and 2 cm beyond its edge as directed, keep the area clean, dry and aired, wear loose cotton, wash towels, bedding and sports kit hot, do not share them, wash hands after touching the patch, treat athlete's foot at the same time, and avoid steroid creams and home remedies such as vinegar or bleach, which irritate the skin without killing the fungus.
Is it ringworm or eczema, psoriasis or pityriasis rosea?
Ringworm has an active scaly edge, a clearer centre and spreads outward slowly as one or a few patches. Discoid eczema makes coin-shaped patches itchy across their whole surface. Psoriasis forms thick plaques with silvery scale on elbows, knees and scalp. Pityriasis rosea starts with one herald patch, then many oval patches on the trunk in a tree pattern, and fades by itself in weeks. Granuloma annulare rings have no scale at all.
Is ringworm treated differently in pregnancy or with diabetes?
In pregnancy, ringworm is treated with antifungal creams rather than tablets, and groin ringworm is common because of sweating and skin folds. With diabetes, ringworm is more frequent and stubborn, cracks between the toes open the door to bacterial infection, and tablets are more often needed, so feet are checked carefully. Anyone with a weakened immune system is assessed in person.
- Tinea corporis (ringworm of the body), DermNet New Zealand Trust, reviewed 2024.
- Tinea capitis (scalp ringworm), DermNet New Zealand Trust, reviewed 2024.
- Fungal skin infection (body and groin): Clinical Knowledge Summary, NICE Clinical Knowledge Summaries, revised 2023.
- Tinea pedis (fungal foot infection), DermNet New Zealand Trust, accessed August 2026.
- Ringworm: symptoms, causes, diagnosis and treatments, HSE, Health Service Executive (Ireland), accessed August 2026.
- Ringworm, NHS, National Health Service (UK), reviewed August 2023.
This page is for information only and is not a substitute for a medical consultation. Guideline links are provided for transparency; treatment decisions are made with your doctor.
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