Molluscum contagiosum: the waxy bumps that clear on their own
What is molluscum contagiosum?
Molluscum contagiosum is a common skin infection caused by the molluscum contagiosum virus, which belongs to the poxvirus family. Despite the alarming-sounding name, it is a mild condition that affects the surface of the skin only. It is particularly common in young children and is not a sign of anything serious. According to the NHS, most children who get molluscum will clear the infection completely without any treatment at all.
What do the bumps look like?
The bumps are small, usually between 1 and 5 millimetres across. They are dome-shaped, smooth, and firm, and they often have a distinctive pearly or flesh-coloured appearance. One of the most recognisable features is a tiny dimple or indent at the centre of each bump. You might see just a few, or clusters of 20 or more in the same area. They can appear anywhere on the body but are most common on the trunk, arms, legs, and the backs of the knees in children. The bumps are not usually painful or itchy, though some children find them a little uncomfortable if they are in a skin fold that rubs.
How do babies and children catch it?
The virus spreads through direct skin-to-skin contact with an infected person. It can also spread indirectly through sharing towels, flannels, clothing, or bath water. Children in nursery and school settings are more likely to come into contact with it simply because they spend time in close physical contact with each other. Swimming pools are sometimes mentioned as a source, though the evidence that pool water itself transmits the virus is limited. Children with eczema may be more vulnerable to catching molluscum because the skin barrier is already disrupted.
The typical timeline: patience is the main ingredient
This is the reassuring part. Your child's immune system will almost certainly clear molluscum on its own. The NHS advises that in most children the bumps resolve within 6 to 18 months. In some children it can take up to 2 years. The bumps sometimes look worse before they get better: they may become red and inflamed shortly before they disappear, which is actually a sign that the immune response is kicking in. New spots may appear in nearby areas while older ones are clearing, which can feel discouraging, but this is part of the normal course of the infection.
Should I treat molluscum contagiosum?
Most dermatologists and the NHS now recommend a watch-and-wait approach for healthy children. Treatment is not routinely offered because the condition clears by itself, and many treatments (including cryotherapy, topical acids, or squeezing the core out of each bump) can be uncomfortable or painful and may cause scarring. The discomfort of treatment is often worse than the condition itself. Leaving the bumps alone is the safest and most commonly recommended course for most children.
There are situations where treatment might be worth discussing with your GP or a dermatologist. These include if the bumps are spreading very rapidly and causing significant distress, if they are in or around the eyelids (where specialist ophthalmology input may be needed), or if your child has a weakened immune system that prevents the usual natural clearance. Your GP can talk you through the options and weigh them against the benefits of watchful waiting.
Swimming, nursery, and everyday life
The good news is that molluscum contagiosum does not need to disrupt your child's routine at all. The NHS and Public Health England are both clear that children with molluscum do not need to stay home from nursery or school, and there is no need to avoid the swimming pool. If your child swims, covering the bumps with a waterproof plaster or an occlusive swimming costume reduces the small chance of spreading the virus to others via shared equipment or seats. The most important everyday precaution is not sharing towels, flannels, or swimwear with other children.
Molluscum versus warts: what is the difference?
Molluscum is sometimes confused with common warts (verrucae), but they are caused by different viruses and look different. Warts caused by human papillomavirus (HPV) tend to be rough and cauliflower-like in texture, and plantar warts (verrucae) appear on the soles of the feet. Molluscum bumps are smooth and dome-shaped with that central dimple. Both conditions clear on their own in time, though warts can sometimes take longer.
When to see your GP
You do not need to rush to a GP the moment you spot molluscum, but it is worth a visit to confirm the diagnosis if you are not sure what you are looking at. See your GP if the bumps are around the eye area, if the skin around the bumps becomes red, hot, or painful (which may suggest a secondary bacterial infection), if your child is becoming very distressed about the spots, or if the bumps do not start to clear after 18 months. Do not attempt to squeeze, pierce, or scrape the bumps at home as this risks spreading the virus and causing scarring.
Frequently asked questions
Do I need to treat molluscum contagiosum?
Most dermatologists recommend leaving molluscum alone. It clears by itself without any treatment, usually within 6 to 18 months. Treatment can cause scarring, pain, or distress, so the NHS advises a watch-and-wait approach for most children.
Can my baby swim with molluscum contagiosum?
Yes. Public Health England and the NHS say children with molluscum can swim. Cover the bumps with a waterproof plaster or swimming costume if possible, and avoid sharing towels. There is no need to avoid the pool.
Should my baby stay home from nursery with molluscum?
No. The NHS is clear that children with molluscum contagiosum do not need to stay home from nursery or school. The condition is mildly contagious through direct skin contact, but exclusion is not recommended or necessary.
How long do molluscum bumps last?
In most children the bumps clear within 6 to 18 months without treatment. In some cases they can persist for up to 2 years. The body eventually builds immunity to the poxvirus and the spots disappear on their own.
Can I pop or squeeze molluscum bumps?
No. Squeezing or picking the bumps can spread the virus to nearby skin, increase the risk of a bacterial infection, and cause scarring. Leave them alone and let the immune system clear them in its own time.
Will my baby get molluscum again after it clears?
It is possible but uncommon. Once the immune system has cleared the infection it builds some immunity to the virus. Reinfection can happen but is less likely than the initial infection.
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