Molluscum contagiosum commonly appears on the genital area in adults, and when it does, it is usually acquired through sexual contact. The virus belongs to the poxvirus family and causes small, firm, dome-shaped bumps on the skin that are benign but can persist for months or longer. While children tend to develop molluscum on their arms and torso, sexually active adults most often see it on the lower abdomen, inner thighs, buttocks, and genitals. The infection is widespread enough that sexual health clinics routinely treat it, yet it gets far less attention than other sexually transmitted infections.
How Molluscum Reaches the Genital Area
Molluscum contagiosum spreads through direct skin-to-skin contact, and in adults the genital area is one of the most frequently affected sites. The virus lives in the top layers of the skin and sheds from active bumps, so any sustained contact with an infected person’s lesions can transfer it. During sexual activity, the friction and close skin contact create ideal conditions for the virus to move from one person to another. This is why, in adults, molluscum on or near the genitals is treated as a sexually transmitted infection by most sexual health guidelines.1Oxford Handbook of Genitourinary Medicine, HIV, and Sexual Health. Molluscum contagiosum
That said, the virus does not require sexual contact to spread. Sharing towels, razors, or other personal items can transfer it, and autoinoculation is common. Autoinoculation is when you scratch or touch an existing bump and then touch another part of your own body, seeding new lesions. This explains why people sometimes notice new bumps appearing in a trail-like pattern radiating outward from the original site. It also means that even a single lesion near the groin can eventually spread across the genital area and upper thighs if left unchecked.
What Genital Molluscum Looks Like
The bumps themselves are distinctive. They are typically small, ranging from a couple of millimeters up to about five millimeters across in most cases, and they have a smooth, waxy surface. The classic hallmark is a small dimple or pit in the center of each bump, sometimes called central umbilication. If you squeeze one, a white, cheesy core can be expressed from the center, which is where the virus concentrates. On genital skin, the bumps tend to be flesh-colored or slightly pinkish, and they usually do not hurt unless they become irritated or secondarily infected by bacteria.
People often confuse molluscum with genital warts, but the two look and behave quite differently. Genital warts, caused by human papillomavirus, tend to have a rougher, more cauliflower-like texture. Molluscum bumps are smoother, rounder, and have that telltale central dimple. A healthcare provider can usually distinguish between them on sight. In ambiguous cases, a dermatoscope reveals characteristic patterns, and a biopsy will show the specific inclusion bodies the virus produces inside skin cells.2Journal of Islamic Medicine. Pemilihan Krim Imiquimod 5% Sebagai Terapi Kombinasi Enukleasi Pada Genital Molluscum Contagiosum Ko-Infeksi HIV
Is Genital Molluscum Really an STI?
This is a question that creates genuine confusion. Molluscum contagiosum is not exclusively sexually transmitted. It spreads by any close skin contact, and in children it has nothing to do with sex. But in adults, when the lesions sit on or around the genitals, sexual transmission is the most common route. Sexual health specialists classify perigenital molluscum in adults as a sexually transmitted infection and recommend that people diagnosed with it be screened for other STIs and that their sexual partners be traced and examined.3PubMed. Molluscum contagiosum: a neglected sentinel infection
The reasoning is practical. If someone picks up molluscum through sexual contact, the same encounter may have exposed them to chlamydia, gonorrhea, or other infections. Treating the molluscum while missing a concurrent STI would be a serious oversight. The “sentinel infection” framing is useful here: genital molluscum in an adult signals that unprotected sexual contact occurred, which means the standard STI screening conversation should happen regardless of whether the molluscum itself is dangerous.
That framing does not mean you should panic about a diagnosis. Molluscum is not in the same league as HIV, syphilis, or even genital herpes in terms of health consequences. It does not invade deeper tissues, it does not cause systemic illness, and in a person with a healthy immune system, it resolves on its own. But because it flags potential STI exposure, taking it seriously from a screening standpoint makes sense.
Two Virus Subtypes and Why It Matters
Molluscum contagiosum virus comes in two main subtypes, MCV1 and MCV2. Both cause the same kind of bumps, and from the outside they look identical. The subtypes differ at the genetic level, and their distribution across the body is not random. A study of over 200 patients found that MCV1 was the predominant subtype overall, but the ratio shifted in genital tissue. In samples from the anogenital region, MCV2 was significantly more common relative to nongenital sites, where MCV1 dominated at roughly a three-to-one ratio.4PubMed Central. Clinical, Histopathological, and Virological Evaluation of 203 Patients With a Clinical Diagnosis of Molluscum Contagiosum
The same study showed an interesting age-and-sex pattern. Children were more commonly infected with MCV1 regardless of body site. Among adult women, MCV2 was actually more common than MCV1, essentially flipping the ratio seen in girls under 17. This suggests that MCV2 has a particular affinity for sexual transmission pathways, although the virus subtype does not change how the infection is treated or how long it lasts. From a patient’s perspective, subtyping is an academic detail. But it reinforces the point that genital molluscum in adults tends to have a different epidemiological profile than the molluscum children get on their arms.
Who Gets Genital Molluscum
Three groups carry the highest risk. Sexually active young adults are the most commonly affected adult population, and the infection accounts for a notable share of visits to sexual health clinics. Immunocompromised individuals, particularly people living with HIV whose CD4 counts are low, are vulnerable to more severe and persistent outbreaks. And pediatric patients make up the largest share of all molluscum cases, though in children the infection almost always appears on non-genital skin.5PubMed Central. Molluscum Contagiosum: Epidemiology, Considerations, Treatment Options, and Therapeutic Gaps
People with atopic eczema face a harder time with molluscum regardless of where it appears. The compromised skin barrier that characterizes eczema makes it easier for the virus to gain a foothold and spread. In these individuals, lesions can be more numerous and take longer to clear. Similarly, anyone on immunosuppressive medication, whether for organ transplantation, autoimmune disease, or cancer treatment, may develop larger papules and a more widespread distribution that does not resolve as quickly.6Oxford Textbook of Medicine. Molluscum contagiosum
Does It Go Away on Its Own?
In someone with a functioning immune system, yes. Molluscum contagiosum is self-limiting, meaning the body’s immune response eventually clears the virus. The catch is that “eventually” can mean months to a couple of years. During that time, existing bumps may grow, new ones may appear through autoinoculation, and the person remains contagious. For genital molluscum specifically, the prolonged contagious period creates a practical problem: either you abstain from sexual contact for many months, or you accept the risk of transmitting the virus to partners.6Oxford Textbook of Medicine. Molluscum contagiosum
This is the main reason many people opt for treatment rather than waiting. The virus itself is harmless, but the social and sexual disruption of carrying a visible, transmissible genital infection for a year or more is enough to motivate most adults to seek active removal.
Treatment Options for Genital Lesions
Treatment choices for genital molluscum overlap with those used elsewhere on the body, but the sensitivity of genital skin introduces some additional considerations. The genital area is thinner-skinned, more prone to irritation, and more cosmetically sensitive than, say, a forearm. Aggressive treatments that work fine on the arm may cause significant discomfort or scarring on the vulva or penile shaft.
Cryotherapy
Freezing each bump with liquid nitrogen is one of the most commonly used in-clinic approaches. It works relatively quickly. In one study, all patients treated with cryotherapy achieved complete clearance, with about 70% clearing within three weeks and the rest by six weeks.7PubMed. Comparative study on the efficacy, safety, and acceptability of imiquimod 5% cream versus cryotherapy for molluscum contagiosum in children Another study found that roughly half of patients needed a second round of freezing, and the overall clearance rate after two visits was above 90%.8PubMed Central. Contributing Factors and Outcome after Cryotherapy of Molluscum Contagiosum among Patients Attending Tertiary Hospital, Northern Tanzania
The downsides are real. Pain during the procedure is almost universal, and afterward you can expect blistering, temporary pigmentation changes, or both. On darker skin, the pigmentation changes can be particularly noticeable and may take months to fade. For genital lesions, the pain and blistering can be especially unwelcome. Cryotherapy tends to be preferred when there are only a few well-defined bumps rather than a widespread rash.
Curettage
Scraping or physically expressing each lesion with a curette is another common procedure. It provides an immediate result for each individual bump, but recurrence is a real issue. A follow-up study found that at four weeks after curettage, about two thirds of patients still had active lesions, and at eight weeks, just under half still did. People with more lesions at the start and those with concurrent eczema were at highest risk of treatment failure.9PubMed. Curettage treatment for molluscum contagiosum: a follow-up survey study The “failures” are usually not because the original bumps regrew but because new ones appeared from virus already seeded in surrounding skin. This is the fundamental challenge with any lesion-by-lesion removal method: it treats what you can see, but subclinical virus in nearby skin may already be developing into the next round of bumps.
Topical Treatments
For people who want to avoid in-office procedures, topical options exist. Potassium hydroxide (KOH) applied directly to the bumps is used in many clinics around the world. A study specifically evaluating KOH for genital molluscum in women found that a 20% concentration worked faster than 10%, clearing lesions in about five weeks on average compared to nearly seven weeks with the lower strength.10PubMed Central. Genital molluscum contagiosum in females – therapeutic efficacy and comparative evaluation of topical 10% and 20% potassium hydroxide KOH is caustic, though, so it needs to be applied carefully to avoid damaging the surrounding healthy skin.
Imiquimod cream, a topical immune booster, takes a different approach. Rather than destroying the bump directly, it stimulates the skin’s local immune response to recognize and attack the virus. It has been used for genital molluscum in both immunocompetent and immunocompromised patients.11PubMed. Topical immunomodulators for the treatment of external genital warts, cutaneous warts and molluscum contagiosum In immunocompromised individuals, it can be combined with physical removal of persistent bumps for a more complete result. One reported case involved a young woman with HIV and genital molluscum who was treated with 12 weeks of imiquimod cream followed by enucleation of the remaining lesions, ultimately achieving clearance.2Journal of Islamic Medicine. Pemilihan Krim Imiquimod 5% Sebagai Terapi Kombinasi Enukleasi Pada Genital Molluscum Contagiosum Ko-Infeksi HIV Imiquimod is slower acting than cryotherapy but generally better tolerated on sensitive genital skin.
Scarring and Complications
Molluscum itself is benign, but that does not mean it leaves no trace. Scarring can occur, particularly when bumps are physically squeezed out or when a secondary bacterial infection develops around the lesion. On genital skin, where the tissue is delicate, even small scars can be noticeable. The risk of scarring is worth weighing when choosing between watchful waiting and active treatment, because some treatment methods (especially curettage and aggressive cryotherapy) carry their own scarring potential. There is a genuine tension here: leaving bumps alone avoids treatment-related scarring but allows more time for the infection to spread, while treating aggressively may leave marks of its own.
Secondary bacterial infection is the most common complication. The bumps can become red, swollen, and painful if bacteria enter through a break in the skin, which happens more easily in the warm, moist genital environment. Keeping the area clean and avoiding picking at the bumps reduces this risk. If you notice increasing redness, warmth, or discharge around a molluscum lesion, that is worth getting looked at promptly.
Genital Molluscum in Children
This is a topic that understandably raises alarm. When a child presents with molluscum bumps near the genitals, the immediate concern is whether sexual abuse may have occurred. The reality is more nuanced. While genital molluscum is rare in children compared to adults, it can and does happen through non-sexual routes. Children touch their own bodies constantly, and autoinoculation from an existing molluscum infection elsewhere on the body can carry the virus to the genital area. Shared bathing, towels, and close physical contact in childcare settings are all plausible transmission routes.12PubMed Central. Atypical infantile genital Molluscum contagiosum
Clinical guidelines generally advise that genital molluscum in a child should prompt a careful but measured evaluation. The presence of molluscum alone, without other concerning signs, does not automatically indicate abuse. Clinicians look at the full picture, including whether the child has molluscum on other body sites, the number and distribution of lesions, and any other behavioral or physical indicators. Jumping to conclusions based solely on lesion location can cause enormous harm to families, so a thoughtful clinical assessment is essential.
Reducing Spread During an Active Outbreak
Because genital molluscum remains contagious as long as bumps are present, minimizing spread to partners and to new areas on your own body takes some effort. Condoms help but are not a complete solution. They only cover the skin they physically cover, and molluscum lesions on the inner thighs, lower abdomen, or pubic area sit outside the condom’s zone of protection. If your lesions are in areas that condoms cannot cover, the virus can still be transmitted during intimate contact.
Practical steps that help include not shaving over or near active bumps, since the razor can carry viral material to adjacent skin. Avoid sharing towels or washcloths, and try not to scratch or pick at the bumps, as that is the main driver of autoinoculation. Covering lesions with a waterproof bandage during sex or swimming adds a layer of protection, though it is not foolproof. The single most effective way to stop spreading the virus is to have the visible bumps treated, since once the lesion is gone, that site is no longer shedding virus.
Reinfection After Clearance
Clearing one episode of molluscum does not guarantee you will never get it again. Unlike some viral infections where recovery confers lasting immunity, the immune response to molluscum contagiosum is not strongly protective against future encounters. The virus is good at evading the immune system during active infection, which is part of why it can persist for so long in the first place. After clearance, re-exposure to an infected partner or contaminated surface can start the cycle over.
That said, some degree of partial immunity likely develops. People who have had molluscum before tend to clear reinfections somewhat faster, though this is not well quantified in large studies. The practical takeaway is that if your partner still has active lesions when yours clear, treating both of you before resuming unprotected contact makes the most sense. Otherwise, you may find yourself dealing with the same bumps a few weeks later.