Molluscum contagiosum

Molluscum contagiosum is a common skin disorder characterized by firm, raised, waxy, flesh coloured bumps with a central core. They are approximately 1-5mm in diameter. It is caused by a pox virus called molluscum contagiosum virus (MCV). There are four types of the molluscum contagiosum virus MCV-1 to MCV-4. MCV-1 is the most prevalent, while MC-4 is most commonly seen in adults & is sexually transmitted.

Transmission of molluscum:

The virus only infects humans & spreads via direct human to human contact (including sexually) & also contact with fomites (ie; inanimate objects such as towels, door handles etc). The incubation period isn’t exactly known but it has been suggested to be from 2 weeks to 6 months, although the average incubation period is 6 weeks.

What are the symptoms of molluscum?

The most obvious symptom of molluscum contagiosum is the presence of firm, raised, flesh coloured bumps with a central core. In adults, they are more commonly found around the lower abdomen, genitals, & thighs. In children they are more often found on the trunk, arms & face.

Complications:

Complications may include;

Itching & discomfort.
Secondary bacterial infection.
Bleeding.
Scarring.

How is it diagnosed?

Most cases of molluscum can be diagnosed by visual inspection of the bumps. A skin biopsy may also be taken for examination in a laboratory.

How is it treated?

Treatment is generally unnecessary in healthy people as molluscum is a self-limiting infection which usually resolves itself within 6-12 months.

However, individuals may wish to remove the papules to avoid passing the disease onto others & or for cosmetic reasons. The method of treatment depends on age, health & the location of the bumps.

There are several methods to remove them including;

Salicylic acid: This non prescription wart applied directly to the lesions.
Cryotherapy: Freezing the lesion(s) off with liquid nitrogen.
Curettage: Scraping the lesions off. This may be performed with or without anesthetic.
Cantharidin: This is a naturally occurring chemical which is applied to lesions.
Laser: Lesions are removed via laser surgery.
Tape stripping: Applying duct tape or elastoplast to the lesions. This is left on for 2 days & then removed. This may need to be repeated several times. Application of Betadine or Cantharin may also be recommended before applying the tape.
Manual extrusion: Your doctor may squeeze the lesions manually. This should not be tried at home as it could lead to infection.

Please note:

The medical articles on this site have not been written by a doctor & should not be considered a replacement for a doctor visit. The articles are provided for informative purposes only.

Always seek immediate medical advice for any problems.

While great care has been made in the creation of these articles, we cannot guarantee the accuracy or omissions on these pages. If in any doubt whatsoever, seek professional medical advice.