Molluscum Contagiosum: What Parents Need to Know — Treatment, Spread, and When to See a Doctor
Medically reviewed by Dr. Celina Kazumi Iwasa, MD, Board-Certified Dermatologist · Last updated July 2026
Molluscum contagiosum is a viral skin infection that produces small, smooth, dome-shaped bumps with a characteristic central dimple — and a disproportionate amount of parental anxiety. It's caused by a poxvirus, spread through direct contact, and affects up to 10% of children at any given time. The most important thing to know: molluscum is completely harmless and almost always resolves on its own. The challenge is that 'on its own' can mean 6–18 months, during which new bumps may continue to appear even as old ones resolve.
Quick Answer
Molluscum contagiosum is a very common viral skin infection that causes small, firm, and pearly bumps with a tiny dimple in the center. It mainly affects children, though adults can also catch it. The poxvirus that causes it is highly contagious and spreads easily through skin-to-skin contact or by touching shared items like towels. While these harmless bumps usually clear up on their own within six to twelve months in healthy individuals, scratching them can spread the infection further. Treatment is sometimes used if the bumps are widespread or bothersome.
White bumps on your child's skin — is it molluscum?
If you have spotted small, pearly, dome-shaped bumps on your child's skin, molluscum contagiosum is one of the most common explanations. The bumps are usually firm, flesh-coloured or pearly white, only two to five millimetres across, and often have a tiny central dimple that looks like a pin-prick. They tend to show up on the trunk, arms, legs, armpits, or behind the knees, and it is common to see a small cluster in one area where your child has been scratching.
The reassuring news is that molluscum is almost always harmless. It is caused by a poxvirus that healthy immune systems clear on their own, usually within six to twelve months, sometimes a little longer. The bumps do not scar when left alone, they do not usually hurt, and they are not a sign that anything is wrong with your child. Many parents notice individual spots turn red or look like a small pimple just before they disappear — that is the immune system winning, not an infection getting worse. If the bumps are spreading fast, appearing near the eyes, or your child seems unwell, that is when it is worth a GP visit rather than watchful waiting at home.
Molluscum or warts — how to tell the difference
Molluscum bumps are smooth, shiny, and pearl-like, with a small dimple in the centre — a bit like a tiny doughnut. Common warts are usually rough, grainy, and cauliflower-textured, without that central dimple. Molluscum tends to appear in small clusters on soft skin, while warts often show up on fingers, knuckles, or the soles of the feet. Both are viral and both eventually clear, so if you are not sure which one you are looking at, a photo check or a GP visit will settle it quickly.
Symptoms
- Round, firm, flesh-colored or pearly bumps
- Central dimple or pit (umbilication)
- Shiny, waxy appearance
- Size ranges from pinhead to pencil eraser
- Can become red and inflamed before clearing
- May itch
Severity & Progression
What Causes Molluscum Contagiosum
Molluscum contagiosum virus (MCV) is a large, double-stranded DNA poxvirus that infects only humans. There are four subtypes, with MCV-1 being the most common.
The virus infects keratinocytes in the epidermis, hijacking the cell's protein-production machinery to create viral factories within the cell cytoplasm. Infected cells enlarge dramatically (forming the characteristic 'Henderson-Paterson bodies' or 'molluscum bodies' visible on microscopy) and accumulate into the dome-shaped papule.
The central dimple (umbilication) corresponds to the point where the most virus-laden cells are nearest the surface — squeezing or puncturing this releases a white, waxy core packed with viral particles. This is exactly how the virus spreads: contact with this material (or with intact lesions) transmits the virus to new sites or new people.
In children, spread occurs through direct skin contact during play, shared towels, and contact with contaminated surfaces. Swimming pools are a common source — not from the water itself, but from shared towels, kickboards, and poolside surfaces. Autoinoculation (self-spread by scratching) is very common, especially in children with eczema where the compromised skin barrier facilitates viral entry.
In adults, molluscum is most commonly sexually transmitted, appearing on the genitals, lower abdomen, and inner thighs. In immunosuppressed adults (HIV, organ transplant), molluscum can be extensive, giant (>1cm), and treatment-resistant.
How Molluscum Contagiosum Differs from Similar Conditions
Several conditions can look similar. Here's how to tell them apart — though a healthcare professional can provide a definitive diagnosis.
| Condition | Key Difference from Molluscum Contagiosum |
|---|---|
| Warts | Rough, 'cauliflower' surface. No central dimple. Caused by HPV, not a poxvirus. Warts feel rough; molluscum feels smooth. |
| Milia | Tiny white cysts without a central dimple. Usually on the face, especially around the eyes. Not contagious. Caused by trapped keratin. |
| Folliculitis | Red or pus-filled bumps centred on hair follicles. Tender or itchy. Caused by bacterial or fungal infection, not a virus. |
| Insect Bites | Itchy, red papules appearing suddenly. Not dome-shaped. No central dimple. Often on exposed skin. |
| Basal Cell Carcinoma (in adults) | Pearly, translucent papule with telangiectasia. Single lesion on sun-exposed skin. Slow-growing. In adults, a solitary 'molluscum-like' papule should be evaluated to exclude BCC. |
Treatment: What Actually Works
Watchful waiting is a legitimate first-line approach, especially in young children. Molluscum is self-limiting — the immune system will eventually recognise and clear the virus. Most cases resolve within 12–18 months. The argument for waiting: treatment of young children can be painful and may cause scarring, while the infection resolves harmlessly on its own.
Reasons to treat: Lesions in cosmetically sensitive areas, rapid spread, eczema complications (molluscum can trigger eczema flares around lesions — 'molluscum dermatitis'), social/school exclusion, or patient/parent preference.
Cantharidin ('beetle juice') — a blistering agent applied in the clinic — is the treatment of choice for children because it's painless at application (blistering occurs 2–24 hours later). The blister destroys the molluscum. Applied precisely to each lesion by the clinician. Multiple treatments may be needed.
Cryotherapy with liquid nitrogen freezes individual lesions. Effective but painful — difficult in young children without topical anaesthetic (EMLA cream applied 1 hour before).
Curettage — physical removal with a small curette — provides immediate results but requires local or topical anaesthesia and can be distressing for children.
Topical treatments: Imiquimod cream (off-label for molluscum, mixed evidence), potassium hydroxide 5–10% solution (applied at home — causes local inflammation that triggers immune clearance), and tretinoin cream (may accelerate resolution of flat warts but evidence for molluscum is limited).
Preventing spread: Don't share towels or clothing. Cover lesions with clothing or waterproof bandages during swimming. Avoid scratching or picking (autoinoculation). Treat concurrent eczema aggressively to maintain the skin barrier.
When Molluscum Contagiosum Is Actually Something Else
The central dimple (umbilication) is the diagnostic hallmark — if you see it, the diagnosis is almost certainly molluscum. Warts are the most common mimic but have a rough, irregular surface without umbilication. In adults, a solitary flesh-coloured papule should prompt consideration of BCC, especially on sun-exposed skin. In HIV patients, giant molluscum can resemble other opportunistic infections — biopsy may be needed.
Molluscum Contagiosum Across Skin Types and Hair Types
Molluscum looks similar across all skin tones — the pearly, dome-shaped papules with central dimple are recognisable regardless of background skin colour. However, molluscum dermatitis (the eczema-like reaction around lesions) and post-inflammatory hyperpigmentation after treatment or resolution are more prominent in darker skin. Cryotherapy carries a higher risk of post-inflammatory hypopigmentation in darker-skinned patients — cantharidin or gentle curettage may be preferred treatment options to minimise pigmentary complications.
Self-Care Tips
- Don't scratch or pick lesions
- Cover lesions to prevent spread
- Don't share towels, washcloths, or toys
- Children can still attend school/daycare (cover lesions)
- Swimmers should cover lesions
When to See a Doctor
If bumps are widespread, on the face, in the genital area, or if you have a weakened immune system
Frequently Asked Questions
What are the white bumps on my child's skin?
Small, pearly, dome-shaped bumps on a child's skin — especially ones with a tiny dimple in the centre — are most often molluscum contagiosum, a common and harmless viral skin infection. They can appear anywhere but are most often seen on the trunk, arms, legs, and armpits. They usually do not hurt, and healthy children clear the infection on their own within about six to twelve months without treatment or scarring.
Does molluscum contagiosum go away on its own?
Yes. In healthy children the bumps clear up on their own as the immune system fights the poxvirus, usually within six to twelve months, though some cases take up to eighteen months. Individual spots often turn red or look like a small pimple just before they disappear — this is a normal sign that the immune system is winning, not that the infection is getting worse. Because the bumps clear naturally and rarely scar, doctors often recommend watchful waiting rather than treatment.
Is molluscum contagious to other children?
Yes, molluscum spreads easily through direct skin-to-skin contact and by sharing items like towels, bath toys, or sports equipment. It is not dangerous — most children who catch it clear it without any problem — but it is worth taking simple steps to reduce spread: do not share towels or bathwater between siblings, keep the bumps covered during close-contact play or sports, and encourage your child not to scratch or pick at them.
Should my child stay home from school or swimming?
No, children with molluscum do not need to miss school or nursery. Public health guidance is that they can attend as normal and can go swimming, as long as visible bumps are covered with clothing or a waterproof plaster during activities that involve close contact or shared equipment. Avoid sharing towels, kickboards, and bath toys to reduce the risk of spread.
Can I check my child's skin bumps online?
Yes — you can upload a clear photo of the bumps to our free online rash checker in the browser to get an instant screening result. It is free to start, works on any phone or laptop with no app to install, and can help you decide whether the bumps look like molluscum or something else. The tool is a screening aid, not a diagnosis — for a confirmed answer or if you are worried, see your GP.
When should I take my child to the GP?
Book a GP appointment if the bumps are spreading rapidly, appearing near your child's eyes or genital area, becoming very red, swollen, painful, or leaking fluid (signs of a secondary infection), or if your child is unwell or immunocompromised. It is also reasonable to see a GP for any bumps you are worried about — reassurance is a good reason to go, even if the bumps turn out to be harmless.
What do molluscum bumps usually look like?
These bumps usually range from the size of a pinhead to a pencil eraser. They are firm, round, and have a shiny or pearly appearance. Most characteristically, you will notice a tiny pit or dimple in the very center of the bump. They do not usually hurt, but they can sometimes become red, inflamed, or itchy right before they start to clear up.
How long does a molluscum contagiosum infection typically last?
In healthy individuals, the bumps usually clear completely within six to twelve months, though it can sometimes take up to eighteen months or longer. As the body fights off the virus, individual spots may turn bright red and look like pimples before they fade. If a person has a weakened immune system, the infection can last much longer and be more difficult to clear.
How can I stop the spots from spreading to other people?
To prevent spreading the virus, it is essential not to scratch or pick at the bumps. Keep the spots covered with clothing or a watertight bandage, especially when swimming or playing sports. Do not share towels, washcloths, clothing, or bath toys. Children can still attend school or daycare as normal, provided that all visible lesions are adequately covered to protect others.
Are molluscum bumps the same thing as ordinary warts?
No, they are different, although both are viral skin infections. Warts are caused by the human papillomavirus (HPV) and often appear rough and cauliflower-like. Molluscum is caused by a poxvirus and creates smooth, pearly bumps with a distinct central dimple. Sometimes molluscum is referred to as water warts, which causes confusion, but a doctor can easily tell them apart.
How can ScanSkinAI help with molluscum contagiosum?
ScanSkinAI can analyze photos of your skin to help identify visual patterns associated with common conditions like molluscum contagiosum. However, please remember that AI tools are purely screening aids and can never provide a definitive medical diagnosis. For a confirmed diagnosis, personalized advice, and appropriate treatment options, you should always have your skin evaluated by a qualified healthcare professional.
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Medical References
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Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. The content on this page should not be used to diagnose or treat any health problem. Always consult with a qualified healthcare professional for proper medical evaluation, diagnosis, and treatment of your condition.