Molluscum Contagiosum: What Parents Need to Know About Those Little Pearly Bumps

Molluscum contagiosum looks worrying, but it’s one of the most harmless skin infections there is. It’s caused by a virus, it’s very common in young children, and it clears up on its own. The hardest part is usually patience: it can take many months.

Imagine bathing your four-year-old and noticing a cluster of tiny, shiny, skin-coloured bumps on their tummy, each with a little dimple in the middle. Over the next few weeks a few more appear. They don’t seem to bother your child at all, but you’re worried. A nurse takes one look and smiles: molluscum. The advice is reassuring: leave them alone.

What molluscum looks like

• Small, firm, raised spots, usually 2 to 5 mm across
• Pearly, skin-coloured, pink or slightly darker than the surrounding skin
• A tiny dent (dimple) in the centre
• Often in clusters on the trunk, armpits, arms, legs or behind the knees
• Usually painless, though they can itch or become red and inflamed before they clear

How long does it last?

Each spot lasts a few months, but new ones can appear, so the whole episode often lasts 6 to 18 months, sometimes longer. Spots that become red and swollen are often a sign that the immune system is clearing them, not that they’re infected.

Stopping it spreading

• Try not to scratch or squeeze the spots
• Don’t share towels, flannels or baths with siblings during flare-ups
• Treat any eczema, because scratching spreads molluscum
• Children don’t need to stay off school, nursery or swimming

But should molluscum be treated?

In most children, no. Treatments such as freezing or scraping can be painful and leave scars, and the spots go away anyway. Some creams are available in some countries but have mixed evidence. See a nurse or doctor if spots are near the eye, look infected (hot, painful, oozing pus, with fever), are very widespread, or appear in an adult. In adults, molluscum can be sexually transmitted or linked to a weakened immune system, so a check-up is worthwhile.

Sources: NHS (Molluscum contagiosum), US Centers for Disease Control and Prevention, American Academy of Dermatology. This guide is for general information and does not replace advice from your own nurse, doctor or pharmacist.