Molluscum Contagiosum in Adults: What You Need to Know

Most adults who find a small, pearly bump assume it is milia or a clogged pore. If that bump has a tiny dent in the middle and new ones keep appearing nearby, it is more likely molluscum contagiosum, a viral skin infection caused by a poxvirus. That difference matters more than it looks: milia vs molluscum is the difference between a harmless bump you can treat at home and a contagious one that spreads the moment you touch it.

This guide shows you what molluscum contagiosum looks like in adults, how to tell it apart from milia and sebaceous hyperplasia, what it means if a bump pops on its own, and why a dermatologist, not a home device, is the right next step.

What molluscum looks like in adults

The visual fingerprint

Molluscum bumps in adults are small (2 to 5mm), smooth, dome-shaped and flesh-colored to pearly white, with a central dimple called umbilication. That dimple is the single most useful clue. In adults, the bumps usually show up on the trunk, arms, neck, or in the groin and genital area when the infection is passed on sexually, and they tend to appear in clusters rather than alone.

The bumps are rarely painful. They can itch when inflamed, and scratching spreads them. In adults with healthy immune systems the infection is self-limiting: the body clears the virus on its own, though that can take 6 to 12 months.

Molluscum popped on its own? What that means

A molluscum bump that popped on its own, or turned red and pimple-like, is often a sign your immune system has started clearing it. The American Academy of Dermatology notes that when the bumps turn red and look like pimples, the body is fighting off the virus and the bumps should soon clear.

The white material that comes out is still contagious, so treat it like any open spot: wash the area gently with soap and water, cover it with a small bandage, wash your hands, and do not squeeze out the rest. Call a doctor if the redness spreads fast, the area swells a lot, becomes painful, or drains thick yellow or green fluid, since those point to a bacterial infection on top of the virus.

How adults get molluscum contagiosum

Adults catch molluscum through direct skin-to-skin contact with the virus. Common routes include sexual contact (the most common route in sexually active adults), sharing towels, razors or clothing, and skin contact at gyms, pools or on wrestling mats. The virus lives in the core of the bumps and on the skin immediately around them.

The incubation period is 2 to 7 weeks, so bumps can appear weeks after the contact that caused them. Adults with weakened immune systems (from HIV, immunosuppressive medications or other conditions) can develop much larger outbreaks with hundreds of lesions, and those cases need specialist care. Per the American Academy of Dermatology, molluscum in immunocompromised people is treated differently and more aggressively than in otherwise healthy adults.

Milia vs molluscum contagiosum: how to tell them apart

The fastest way to tell milia from molluscum contagiosum is to look for the dimple and watch for spread: molluscum has a central dent and multiplies, milia have neither. Getting this right decides everything that follows, because one is treated at home and the other is not.

Milia vs molluscum

Milia are tiny (usually 1 to 2mm), hard, white or yellowish keratin cysts that sit just under the surface. They cluster on the face, especially around the eyes, cheeks and nose, feel firm like a grain of sand, do not itch, and have no central dimple. They are not contagious, so the number you have stays the same week to week.

Molluscum bumps are larger, softer, smooth and pearly, with that telltale dent in the middle. In adults they appear more often on the body than on the face, can itch, and new ones pop up near the first ones, especially along skin folds or anywhere you scratch or shave. If you are seeing new bumps appear week after week, treat that spread pattern as a strong sign of a viral cause that needs a clinical diagnosis.

Sebaceous hyperplasia vs molluscum contagiosum

Sebaceous hyperplasia is the look-alike that fools people most, because it also has a small opening in the center. The difference: sebaceous hyperplasia bumps are enlarged oil glands, soft and yellowish, found on the nose, forehead and cheeks, most common in middle age, and they do not spread or clear up on their own. Molluscum is whiter and more pearly, appears in clusters, spreads by touch, and usually fades within 6 to 12 months.

Skin tags and closed comedones

Skin tags are soft growths that hang from a small stalk, with no dimple. Closed comedones are clogged pores under a thin layer of skin, usually on the forehead and chin. If you are sorting through these, our guide to closed comedones vs milia vs sebaceous filaments covers them in detail, and our walkthrough on what that bump on your face might be helps you narrow down the rest.

↔ Swipe the table sideways to see the full comparison.

The NIH MedlinePlus skin conditions reference is a reliable place to read more about the difference between infectious and non-infectious skin growths while you work out what you have.

If the bumps spread to new spots on their own, the cause is viral. Viral means a doctor, not a device.

Why molluscum is a doctor visit, not a home fix

The virus spreads when you disrupt the bumps

Every molluscum bump holds a core of viral material called molluscum bodies, and breaking the bump spreads it. When a bump is popped, scraped or punctured, that material lands on the surrounding skin and on your hands, and new bumps appear wherever those hands or tools touch next. This is called autoinoculation, and it is why most attempts to deal with these bumps at home make the outbreak bigger, not smaller.

Shaving works the same way: the razor nicks the bumps and seeds new ones along the shaving path. Skip shaving over affected areas until the bumps are gone.

Treatment options your dermatologist will consider

A dermatologist has four main in-office or prescription options. Cantharidin is a topical agent applied in the office that makes the bump blister and fall off. Curettage physically removes the bumps. Cryotherapy freezes them. Topical imiquimod nudges the immune response to clear the virus over several weeks. Per the Mayo Clinic, the right approach depends on the number of lesions, where they are, and your immune status.

For healthy adults with only a few bumps, watchful waiting is also a fair choice, since the immune system usually clears molluscum within 6 to 12 months. Your dermatologist will help you weigh faster clearance and less spread against simply waiting it out.

What not to do with molluscum bumps

The five habits below are what turn a handful of bumps into a larger outbreak, so avoiding them is the most useful thing you can do while you wait for your appointment or for the bumps to clear.

If scratching or irritation does damage the skin around the bumps, the dark marks left behind are post-inflammatory hyperpigmentation. Those marks are a separate issue your skin may carry even after the molluscum clears.

Before you treat any bump at home

Treat a bump at home only once you are sure it is one of the non-viral types in the table above, and check with a professional first whenever any of the signs below apply.

FAQ

Frequently asked questions

Real questions adults ask once they suspect molluscum contagiosum.

↓ Tap each question to reveal the answer.

The bottom line

Molluscum contagiosum is a virus, and a dermatologist manages it. The two questions that sort it from milia and other look-alikes are simple: does the bump have a central dimple, and are new ones appearing? If either answer is yes, leave it alone and book an appointment. If you are not certain, see a dermatologist before doing anything to it.

If your bumps turn out to be one of the non-viral types, such as milia, skin tags or sebaceous hyperplasia, the OcuraLife Plasma Pen is built for those. It is not a molluscum treatment and should never be used as one. On a non-viral bump, a session takes about five minutes; a small scab forms and falls off between day 3 and day 7, and the spot is usually gone within 1 to 3 weeks. For how at-home plasma pens compare, see our best at-home plasma pen 2026 guide, or browse more of our skin guides.

The OcuraLife Plasma Pen is a cosmetic device for benign, surface-level spots and is not a substitute for medical advice or diagnosis. If a spot is changing or you are unsure, check with a qualified professional.