Ringworm in babies: what it actually is and how to treat it
The name "ringworm" sounds worrying, but there are no worms involved at all. It is a common fungal infection of the skin, and in most babies it clears up completely with a few weeks of antifungal cream. Here is everything you need to know to identify it, treat it, and stop it spreading.
What ringworm actually is
Ringworm (medically called tinea corporis on the body or tinea capitis on the scalp) is caused by a group of fungi called dermatophytes. These fungi feed on keratin, the protein found in skin, hair, and nails. The misleading name comes purely from the ring-shaped pattern the infection leaves on the skin. There is no worm or parasite involved, and you cannot "catch a worm" from it.
Ringworm is very common in young children. Their immune systems are still developing, their skin comes into close contact with other children and animals, and they share equipment at nursery and playgroup.
What it looks like
On the body, ringworm starts as a small, flat, scaly patch that gradually expands outward. The distinctive feature is that the edges are slightly raised and red or pink, while the centre often looks paler and clearer, giving it the ring appearance. The patch can be itchy and may look slightly shiny. You can see it anywhere on the body: the trunk, arms, legs, face, and nappy area are all common sites.
On the scalp, it looks different. Instead of a clear ring, you are more likely to see one or more oval or irregular patches where the hair is broken off close to the scalp, leaving short stubble or bald-looking areas. The scalp skin underneath may be scaly, slightly red, or have small black dots where the hair has snapped. Scalp ringworm needs a different treatment to body ringworm (see below).
How babies get ringworm
The fungal spores spread easily through three main routes:
- Direct contact with an infected person, including siblings, playmates, or caregivers.
- Animals, particularly cats and dogs. Infected pets can carry the fungus even without obvious skin changes. If your baby develops ringworm and you have a pet, a vet check is worthwhile.
- Contaminated objects and surfaces, including towels, bath mats, hairbrushes, and soil. The fungus can survive on surfaces for months.
A small break in the skin, such as a scratch, insect bite, or dry patch from eczema, gives the fungus an entry point and increases the chance of infection.
Treating ringworm on the body
Body ringworm in children over one year old is usually treated with an over-the-counter antifungal cream such as clotrimazole or miconazole. Apply the cream to the rash and about 2 cm of normal skin around the edge, twice a day. Continue for two to four weeks, or for at least one week after the rash has completely gone, to make sure you have cleared the infection fully. Do not stop early just because it looks better.
For babies under one year old, always see a GP before using any antifungal cream. A GP can confirm the diagnosis and prescribe the right product and dose.
If the ringworm is not responding after four weeks of cream, covers a large area, or there are many patches, see a GP who may prescribe oral antifungal medication or a stronger preparation.
Scalp ringworm needs a GP
Antifungal cream does not work for scalp ringworm because it cannot penetrate deep enough into the hair follicle. A GP needs to prescribe an oral antifungal medicine, typically griseofulvin or terbinafine, which is taken for several weeks (usually six to eight). A medicated shampoo is often prescribed alongside oral medication to help reduce the spread of spores.
It is important not to delay treatment for scalp ringworm. If left untreated, it can occasionally cause a painful inflammatory reaction called a kerion, a boggy swollen mass on the scalp that can lead to permanent scarring and hair loss in that area.
Preventing ringworm from spreading
Give your baby their own towel, flannel, comb, and hairbrush, and do not share these with others while the infection is active. Wash towels and bedding at 60°C. Vacuum floors and upholstered furniture regularly, as spores can linger. If you have a pet, ask your vet to check them, and treat the pet and your baby at the same time if necessary to avoid passing the infection back and forth.
Nursery and childcare guidance
According to NHS guidance, children with ringworm on the body can generally attend nursery as long as the affected area is kept covered with a dressing. For scalp ringworm, it is sensible to keep your baby home until they have started oral treatment and the nursery has been informed so they can monitor other children. Always check with the nursery directly as their policies may vary.
Ringworm versus eczema
Eczema and ringworm can sometimes look similar, especially on dry or fair skin. Eczema tends to appear in typical locations (elbow creases, behind the knees, wrists, neck), is usually dry and itchy, affects both sides of the body symmetrically, and runs in families with asthma or hayfever. Ringworm tends to be a single expanding patch with a clear ring, asymmetrical, and often has a sharper, more defined edge. If you are unsure, see a GP rather than trying to treat with cream. Using a steroid cream on ringworm can make it much harder to clear.
Frequently asked questions
How does a baby get ringworm?
Babies pick up ringworm through direct contact with an infected person or animal, or by touching contaminated surfaces like bath mats, towels, or soil. Nursery and playgroup are common settings because the fungal spores spread easily between children in close contact.
Can my pet give my baby ringworm?
Yes. Cats and dogs can carry the ringworm fungus, sometimes without obvious symptoms themselves. If your baby develops ringworm and you have a pet, it is worth having the pet checked by a vet. Treating both at the same time prevents re-infection cycling between them.
Can I buy ringworm cream without a prescription?
For children over one year old with a small patch of body ringworm, a pharmacist can advise on over-the-counter antifungal creams such as clotrimazole. For babies under one, any scalp ringworm at any age, or infection that is not improving, see a GP for a prescription and to confirm the diagnosis.
Why does scalp ringworm need different treatment?
Antifungal cream cannot penetrate the scalp deeply enough to reach the root of the hair follicle where the fungus lives. Scalp ringworm needs oral antifungal medication, prescribed by a GP, taken consistently for several weeks to clear the infection fully.
How long does ringworm take to clear?
Body ringworm usually clears within 2 to 4 weeks of consistent antifungal cream use. Scalp ringworm takes longer, often 6 to 8 weeks of oral treatment. Continue the full course even if the rash looks better, as stopping early allows the fungus to regrow.
Can my baby go to nursery with ringworm?
NHS guidance says children with ringworm on the body can usually attend nursery as long as the affected area is kept covered. For scalp ringworm, keeping your baby home for the first few days of treatment and letting the nursery know is sensible so they can watch for spread. Always check with your nursery directly.
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