What is Molluscum Contagiosum?

Molluscum contagiosum is a viral skin infection that appears on the skin and, rarely, on mucous membranes such as inside the mouth or genital area. It is considered a sexually transmitted infection in adults, while in children it spreads mostly through direct skin-to-skin contact.

The condition is most common in infants and young children, though adults can also be affected. It usually presents as clusters of small papules, typically in warm and moist areas such as the armpits, groin, or behind the knees. These lesions range from 1 to 6 mm in size, appearing white, pink, or brown, often with a waxy, dome-shaped look and a central dimple. While harmless, molluscum contagiosum can persist for months or even years and may sometimes leave small pitted scars after healing.

How Does Molluscum Contagiosum Spread?

• Children: Spread through direct skin contact, often during play.

• Adults: Commonly transmitted through sexual contact.

• Wet Environments: Shared showers, swimming pools, or sports activities increase risk.

• Vertical Transmission: The virus can pass from mother to baby during pregnancy.

What Causes Molluscum Contagiosum?

The infection is caused by a poxvirus, specifically the Molluscum Contagiosum Virus (MCV), which has four types: MCV-1, MCV-2, MCV-3, and MCV-4.

• MCV-1: The most common type overall.

• MCV-4: Usually seen in adults and often transmitted sexually.

The virus remains in the upper layers of the skin and does not spread internally. Lesions typically appear 1 to 3 months after exposure. Children with atopic dermatitis may experience more widespread and persistent infections.

Symptoms of Molluscum Contagiosum

• Dome-shaped, flesh-colored or pink bumps, 1–5 mm in diameter.

• Central dimple (navel-like appearance).

• Most lesions are painless but may become itchy.

• Scratching can spread the virus to other body parts, including under the nails.

• Lesions may occasionally bleed or leave scars.

• In about 10% of cases, eczema may develop around the lesions, sometimes with secondary bacterial infection.

Beyond physical symptoms, molluscum contagiosum may cause psychological distress, social embarrassment, and anxiety due to its contagious nature and appearance.

Diagnosis

Diagnosis is usually made through dermatological or gynecological examination. In uncertain cases, a biopsy of the lesion may be performed to confirm the presence of the virus.

Why Should Molluscum Contagiosum Be Treated?

While some infections resolve spontaneously within 6–8 weeks or a few months, others may persist for 6 months to 5 years. Active treatment is recommended to:

• Prevent prolonged infection.

• Avoid scarring or secondary infections.

• Stop transmission to sexual partners or close contacts.

• Reduce psychological and social impacts.

Conclusion

Molluscum contagiosum is generally a benign viral infection but can last for an extended period if left untreated. Since it spreads easily through skin contact and sexual activity, seeking medical care and starting treatment is essential to protect both personal and public health.