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Molluscum Contagiosum in Children: Small Bumps, Big Questions

Molluscum causes small pearly bumps with a central dimple. They are harmless and usually resolve on their own, though it can take many months to two years.

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Lena Park, PNP — Pediatric NP

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What molluscum contagiosum is and who gets it

Molluscum contagiosum is a skin infection caused by a poxvirus — not a bacterium, not a wart virus, not a fungus 1. The virus produces small, firm, round bumps that are typically flesh-colored, pearlescent, or slightly pink, with a characteristic tiny dimple (central umbilication) at the top of each bump. Bumps range from about the size of a pinhead to a pencil eraser and can appear alone or in clusters or lines.

It is one of the most common viral skin conditions in childhood 1. The CDC estimates molluscum is most prevalent in children between 1 and 10 years old, though it can occur at any age. Children with eczema (atopic dermatitis) or any condition affecting the skin barrier are particularly susceptible because a disrupted skin barrier makes it easier for the virus to take hold 1. Children living in warm, humid, or crowded environments are also at higher risk. On the body, bumps most often appear on the trunk, arms, legs, armpits, and the backs of the knees — areas that come into contact with other surfaces or other people.

How molluscum spreads

The molluscum virus spreads through direct skin-to-skin contact with an infected person or through contact with contaminated objects — towels, clothing, bath sponges, or shared pool and gym equipment 12. It can also spread to new spots on a child's own body through scratching or picking at the bumps, which releases the virus-containing fluid inside.

Children in swimming pools, daycare settings, and close-contact sports are frequently exposed. The incubation period ranges from about two weeks to six months, which means it is usually impossible to trace exactly where a child picked it up. The condition is not serious and most healthy children build immunity and clear the infection naturally.

Does molluscum need treatment?

For most healthy children, no treatment is needed 2. The American Academy of Pediatrics and the American Academy of Dermatology both support a watchful-waiting approach because the bumps resolve on their own as the immune system clears the poxvirus. The CDC notes that individual bumps typically go away within 6 to 12 months, though in some children the whole episode — with new bumps appearing as old ones resolve — can take up to 4 years 1. Bumps that resolve naturally generally leave no scars.

There are situations where a provider might recommend treatment rather than watchful waiting 2: when bumps are causing significant distress or embarrassment, are in a location where they rub or catch on clothing, are spreading rapidly, or the child has eczema (in which molluscum can spread more easily through scratched or inflamed skin). Treatment options a provider might discuss include topical prescription medications (such as cantharidin applied in office, or berdazimer gel) and in-office procedures. No treatment cures molluscum instantly — each option works gradually. Any treatment decision is best made in conversation with the child's provider, weighing the potential for discomfort and the risk of scarring from treatment against the likelihood of natural resolution 2.

Managing day-to-day at home

Keeping the bumps covered with clothing or a waterproof bandage during contact sports or pool swimming can reduce the chance of spreading the virus to others 12. Discouraging scratching or squeezing is important — doing so releases virus-containing fluid and can lead to new bumps appearing nearby or spreading the virus to other people. Children with eczema may benefit from keeping skin well-moisturized, which helps maintain the skin barrier and limit the spread of molluscum through broken skin.

Good hand hygiene and not sharing towels, washcloths, or clothing with household members are the most practical everyday steps. Pool facilities vary in their policies; covering visible bumps before entering the water is considered courteous and reduces risk to other swimmers. There is no need to keep an otherwise healthy child home from school — molluscum in a covered area does not require exclusion under standard school health guidelines.

What to expect as molluscum clears

As the immune system begins to clear molluscum, individual bumps often become red, swollen, and inflamed before they disappear — this immune response is actually a sign that the body is working and is not cause for alarm 2. Bumps that resolve naturally generally do not leave scars.

If the bumps are increasing very rapidly, appear on or near the eye, the child develops signs of a secondary bacterial skin infection (a bump that becomes very red, warm, or drains pus), or the child has a condition that affects immune function, a provider visit is important.

Common questions

Should my child avoid the pool with molluscum?

Covering visible bumps and not sharing towels are generally recommended steps. Some pool facilities ask children with uncovered molluscum to stay out of the water. Checking with the pool's policy and the child's provider gives the clearest guidance for the specific situation.

How is molluscum different from warts?

Both are viral skin infections, but they are caused by different viruses. Molluscum bumps are smooth, round, and often have a central dimple and a pearlescent look; warts are typically rough-surfaced and firm. A provider can help distinguish them if there is uncertainty.

Will molluscum leave scars?

Bumps that resolve naturally generally do not scar. Scratching, squeezing, or some treatment procedures carry a greater risk of leaving a small mark. This is one reason many providers favor watchful waiting in children.

Can adults in the household catch molluscum from a child?

The molluscum virus can spread to adults, though many adults have prior immunity. Avoiding sharing towels or washcloths and encouraging the child not to scratch are sensible household precautions.

Talk to a clinician

Lena Park, PNP — Pediatric NP

kids & families. Gale can match you with a licensed clinician for a visit.

Find care →

When to get care right away

  • —Bumps appearing on or inside the eyelid or near the eye
  • —Very rapid spread to many new body areas over a short period
  • —Signs of a secondary bacterial infection: a bump becomes very red, warm, swollen, or drains pus
  • —Child has a known immune deficiency and bumps are multiplying quickly

This article provides general health information for parents and is not a diagnosis or personalized medical advice. Consult your child's provider with specific concerns.

References

  1. 1.Centers for Disease Control and Prevention (2025). About Molluscum Contagiosum. CDC Health Topics. link ✓Molluscum is caused by a poxvirus; most common in children ages 1–10; bumps typically resolve in 6–12 months but may take up to 4 years; spreads via direct contact and contaminated objects
  2. 2.American Academy of Pediatrics (2024). Molluscum Contagiosum in Children: Symptoms, Treatment & Prevention. HealthyChildren.org. link ✓Most children with molluscum do not need treatment; watchful waiting is recommended; treatment options (cantharidin, berdazimer gel, cryotherapy) for bothersome cases; covering bumps reduces spread

2 sources, numbered by first appearance. General health information, not medical advice — synthetic demonstration content.