Good news: This is a harmless condition.
What
does molluscum look like?
The rash consists of raised, round smooth bumps that look like
thick-walled pimples or small warts. The bumps are skin-colored
and sometimes have a dimple in the center. There can be only 5-10
bumps in just one area, or there can be dozens all over the body.
Bumps can be the size of a pinhead to 1/4" across. The
rash doesn't hurt, but occasionally will itch.
What
causes molluscum?
It is caused by a virus (poxvirus.) It is transmitted only by
close skin-to-skin contact. The incubation period is 4-8 weeks.
Children usually catch the virus as
toddlers or preschoolers. If a child picks at a bump, then
scratches elsewhere, the bumps can spread to other parts of the
body. There is no need to keep a child out
of day care for molluscum.
How
long will molluscum last?
Most bumps will disappear on their own without treatment, but it
usually takes 6-18 months. They can last even longer if the child
has sensitive dry skin (atopic dermatitis) or if the child picks
at the bumps and they become infected.
Can
anything be done to remove them faster?
There is no consensus among doctors about the best way to treat molluscum.
In general, the two proven treatments are similar
to wart removal: freezing the bumps in the office or applying an acid-like medication to the skin at home. The former can be
painful or frightening for young children. The latter can cause significant skin irritation, even worse than the molluscum, and requires faithful application to all the lesions. Other medications, such as Tagamet, imiquimod cream, and Retin-A have been used with occasional success, but they are effective only 50-80% of the time.
We generally don't recommend molluscum removal unless they are a severe cosmetic problem or if they are in a high-friction area (such as the armpit.) In those cases, medications such as Verrusol or Cantharone can be applied directly to the bumps. Be aware that, because this is a cosmetic therapy, insurance sometimes does not pay for treatment.
There is evidence that a home remedy is safer and just as effective as any of these: duct tape! Cleaning the lesions, applying duct tape to the lesions at bedtime, then removing the duct tape the next morning has shown to work well for many children.