Viral skin bumps a common occurrence in childhood

(Differin). This medication is now is offered over the counter and can be found in the acne product aisle. Some irritation in the form of red, flaky skin can develop, which is OK. This is a sign that your child’s body is responding to the treatment. If too much irritation develops, though, you may want to space out the applications to every other or every third night.

A dermatologist can offer alternative therapies, including prescription-strength versions of the retinoid-type medications and other such creams. For older children and teens, scraping or freezing the bumps can be an option. In younger children, a favorite treatment for molluscum is to apply a solution made from a secretion of the blister beetle, which is called cantharidin. This clear, painless solution is applied to the bumps in a dermatologist’s office, and it is then washed off at home a few hours later.

In patients with preexisting conditions, such as eczema or other skin rashes, molluscum can spread more quickly. Patients may need special treatment to help with any flaring of their eczema before the molluscum can be treated.

Though not as common, adults also can get Molluscum contagiosum. However, in adults, molluscum is considered a potentially sexually transmitted condition and can be associated with immunodeficiency, such as HIV infection. Therefore, I always recommend that adults who develop spots see their primary health provider or a dermatologist to confirm the diagnosis and discuss next steps.

Once someone has been diagnosed with molluscum, I recommend taking care to avoid sharing clothing and linens because there is a chance of spreading the infection to others through contact with these items. It also helps to minimize scratching the affected areas because it can cause the virus to spread and the bumps to multiply. Although it can be challenging to know if someone has molluscum, be mindful when sharing bathing or swimming spaces.

— Ashley Wentworth, M.D., Dermatology, Mayo Clinic, Jacksonville, Florida

Mayo Clinic Q&A is an educational resource and doesn’t replace regular medical care. Email questions to MayoClinicQ&A@ mayo.edu.

Molluscum is not dangerous and should go away on its own, but it can take time.