Molluscum Contagiosum

When it usually starts

When it usually starts

Daily care

Daily care for Molluscum Contagiosum

Treatments

Treatments for Molluscum Contagiosum

Limited evidence

Hydrocortisone 1%

For the dry itchy eczema-like patch that develops around the bumps in about a third of children — not for the bumps themselves. Treating it properly matters, because the itch drives the scratching and the scratching is what spreads the infection. Use it on the skin between and around the bumps, thinly and for a short course. Strong steroid creams applied over the bumps calm the redness and can help the virus stay longer.

Limited evidence

Salicylic Acid

The wart products in the pharmacy are the wrong tool here. Molluscum is a poxvirus, not the wart virus, and the bumps are soft domes rather than thickened skin for an acid to dissolve. On thin skin, on a child, and on thirty bumps at once, it mostly buys irritation and dark marks. If a bump is going to be treated, the clinic options are more reliable and better controlled.

Limited evidence

Tea Tree Oil

A common suggestion, usually combined with iodine, and the evidence behind it is a small number of low-quality studies. Against an infection that clears by itself, that is very hard to read. The real drawback is that it stings and it commonly causes an allergic rash on children's skin, which then itches, which then gets scratched.

Strong evidence

Berdazimer

Berdazimer gel. A newer prescription gel mixed and applied at home once a day, designed specifically for molluscum. In its trials about a third of children had all their bumps clear at twelve weeks, against roughly one in five given the placebo gel — a real effect, but a modest one. Redness and irritation where it is applied are common, and cost and availability are the practical limits.

Limited evidence

Potassium hydroxide solution

A dilute alkaline solution dabbed on individual bumps at home, usually once or twice a day until each bump becomes inflamed and then clears. It is cheap and it can be done without appointments. It stings, it works by irritating the skin, and it can leave dark or pale marks if it is overdone — so it goes on the bumps only, and starting with a few is sensible.

Limited evidence

Tretinoin

A retinoid dabbed onto individual bumps to irritate them into clearing. It is sometimes chosen for bumps on the face, where blistering or scraping is less appealing. The evidence for it in molluscum is thin, it is slow, and it makes the skin around the bumps red and flaky, which is its own reason to scratch.

Avoid

Imiquimod

This one was studied properly in children, in two large trials, and it did not work any better than the placebo cream — while causing more skin reactions, and in some children pain and swelling. It is still prescribed for molluscum out of habit. On the evidence there is, it should not be.

Strong evidence

Cantharidin

A blistering liquid painted onto each bump in the clinic and washed off a few hours later at home. A small blister forms over the next day and the bump lifts off with it. It is painless to apply, which is why it suits children, and it usually takes two or three visits. It is not used on the face or the genitals, and it can leave a dark or pale mark, so a few bumps are treated first to see how the skin reacts.

Moderate evidence

Curettage

The bumps are scraped off with a small looped instrument, usually after numbing cream has been left on for an hour. It is the fastest option — most of a crop can be dealt with in one visit — and it is the one that gives an immediate result. It is uncomfortable even with numbing, small children often find it distressing, and it can leave small marks or pitted scars where bumps were deep.

Moderate evidence

Cryotherapy

Each bump is frozen for a few seconds, and it usually takes several visits a few weeks apart. It works, and it is quick. It also stings sharply at the time, which most young children will not sit through twice, and it leaves dark or pale marks more readily than the other options — a real consideration on deeper skin tones, where those marks can last longer than the infection would have.

Outlook

What to expect with Molluscum Contagiosum

Molluscum is self-limiting and usually clears within six to eighteen months, occasionally two years or more in children with eczema. The shape of the course catches people out, because the bumps do not all appear at the start and fade together.

1. 1

   Early weeks · The first bumps

   Individual bumps last a few weeks to a few months. Only a few are there at the start, so the size of the problem now says little about where it goes.

2. 2

   The middle months · Numbers rising

   New bumps keep arriving while older ones resolve, so the total rises for months before it falls, often peaking around the middle.

3. 3

   Along the way · Any point in the episode

   Roughly a third of children develop a dry, itchy eczema-like patch around the bumps. It is a reaction to the virus, not a new problem, and it settles as the bumps do. Treat it anyway, because the itching drives scratching and scratching spreads the infection.

4. 4

   The end · Over a month or two

   As the immune system recognizes the virus, a bump becomes red, swollen, tender, sometimes crusted. This gets mistaken for bacterial infection and treated with antibiotics that were not needed. When one bump does it, others follow within weeks and the crop can clear.

5. 5

   After clearing · The months that follow

   Immunity is usually good afterwards. Flat dark or pale marks can remain and fade over months. True scars come from picking, deep scratching or aggressive treatment, not the infection.

When to get help

When to get help