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Molluscum contagiosum is a viral disease that affects the skin 12. It is most common among children, though it can affect people of all ages, according to the Centers for Disease Control and Prevention. When it infects the genitals it is often mistaken for herpes, although the skin lesions are not painful—herpetic skin lesions typically hurt. Spread can most easily be prevented by avoiding contact with infected individuals (including the sharing of clothing and towels) and by following proper hand hygiene.
If you are experiencing serious medical symptoms, seek emergency treatment immediately.
Molluscum contagiosum causes a characteristic progressing skin lesion 12. The infected area first shows symptoms in the form of a small reddish and raised patch of skin, also known as a papule. As the disease progresses, it forms a pinkish or flesh-colored nodule. The skin lesion that molluscum contagiosum causes often has a small dimple or pit in the center 12. The nodules can vary in size between the approximate size of a pinhead up to approximately the size of an eraser. The nodules generally are not painful, but can be itchy. Scratching can lead to irritation, inflammation and swelling.
- Molluscum contagiosum causes a characteristic progressing skin lesion 1.
- The nodules generally are not painful, but can be itchy.
Infection Sites and Spread
Diseases Causing Skin Rash
Molluscum contagiosum can affect the skin on any part of the body, though it rarely affects the palms or the soles of the feet (because the skin there is thicker) 12. Typically, this virus affects the face, neck and abdomen, as well as the limbs (arms and legs). Molluscum contagiosum can appear as a single lesion or as a group of small papules 12. Molluscum contagiosum can also affect the genitals and be spread as a result of sexual contact with an infected person 12. The virus spreads as a result of direct skin-to-skin contact, so it typically occurs in unclothed areas. The disease can also spread from using contaminated clothing and towels, as well as from swimming in an infected swimming pool.
Because molluscum contagiosum is caused by members of the Poxviridae family of viruses, it can pose a more serious risk to people with suppressed immune systems 12. These immunocompromised individuals include people with AIDS, people who have recently undergone chemotherapy or patients who have received an organ transplant. In this case, the disease progresses more rapidly. Molluscum contagiosum typically goes away on its own after six to 18 months in healthy individuals, but the disease may persist for years in the immunocompromised 12.
Diseases Causing Skin Rash
Early Signs of Skin Cancer and Penile Cancer
Herpangina in Adults
How to Identify Symptoms of Impetigo
Causes of Rash in the Genital Area
Causes of Annular Skin Rash
The Stages of Shingles Rash
Causes of Fluid Filled Bumps on the Skin That Cause Itching
Symptoms of Infantigo
A Mild Case of Shingles
- CDC: Molluscum Contagiosum
- Medline Plus: Molluscum Contagiosum
- Silverberg NB. Pediatric Molluscum Contagiosum. Pediatric Drugs. 2003;5(8):505-512. doi:10.2165/00148581-200305080-00001
- Tyring SK. Molluscum contagiosum: the importance of early diagnosis and treatment. American Journal of Obstetrics and Gynecology. 2003;189(3). doi:10.1067/s0002-9378(03)00793-2
Adam Cloe has been published in various scientific journals, including the "Journal of Biochemistry." He is currently a pathology resident at the University of Chicago. Cloe holds a Bachelor of Arts in biochemistry from Boston University, a M.D. from the University of Chicago and a Ph.D. in pathology from the University of Chicago.