How is molluscum transmitted?
Molluscum contagiosum virus (MCV) is transmitted by skin-to-skin contact of the lesions.
MCV may be transmitted from inanimate objects such as towels and clothing that come in contact with the lesions. MCV transmission has been associated with swimming pools and sharing baths with an infected person.
MCV also may be transmitted by auto inoculation - touching a lesion and touching another part of the body. To prevent spreading the infection further, do not shave over or close to lesions, and do not pick at sites that are visibly infected.
What is the incubation period?
The incubation period averages 2 to 3 months and may range from 1 week to 6 months.
How long are you infectious?
This is not known for certain, but researchers assume that if the virus is present, it may be transmitted.
What are the symptoms?
Children typically develop lesions on the face, trunk, legs and arms.
In adults, lesions are usually present on the thighs, buttocks, groin and lower abdomen.
The lesions may begin as small bumps which can develop over a period of several weeks into larger sores/bumps. The lesions can be flesh colored, gray-white, yellow or pink. They can cause itching or tenderness in the area, but in most cases the lesions cause few problems. Lesions can last from 2 weeks to 4 years—the average is 2 years.
People with compromised immune systems may develop extensive outbreaks.
How is it diagnosed?
Diagnosis is usually made by the characteristic appearance of the lesion. However, if the lesion does not have the typical features of molluscum, because it is irritated, or is not in a typical place, it may require a biopsy to diagnose.
How is it treated?
Most symptoms are self-resolving, but generally lesions are treated with a destructive technique. Treatment of lesions reduces auto inoculation and transmission to others.
Destructive therapies include topical medications applied in the office to intentionally irritate the lesions or cryotherapy which freezes and kills the infected skin cells.
Lesions may recur, but it is not clear whether this is due to reinfection, exacerbation of subclinical infection, or reactivation of latent infection.
What does it mean for my health?
In children, the lesions are harmless and does not typically reflect any underlying health issues. In adults, your health care provider will discuss potential associated diseases, if necessary.
How can I reduce my risk?
In children, infected siblings should not bathe with or share towels with other siblings. In between treatments, covering the lesions with liquid band-aids can decrease the risk of spreading the virus. Additionally, treating dry skin and eczema is important as the virus enters and infects skin that is cracked and damaged.
Because transmission through sexual contact is the most common form of transmission for adults, preventing skin-to-skin contact with an infected partner will be most effective in preventing MCV.
If you do get molluscum contagiosum, avoid touching the lesion and then touching another part of the body without washing your hands to prevent any chance of spreading the infection.
Centers for Disease Control and Prevention