Genital warts, herpes, and molluscum bumps look enough alike that you usually can't tell them apart by sight. Warts tend to be rough or cauliflower-like, herpes shows up as painful blisters that crust over, and molluscum forms firm, pearly bumps with a tiny central dimple. A swab or exam settles which one you have.
self-limiting virus
lifelong; antivirals control, not cure
most clear in 2 yrs; vaccine prevents cancer
| Item | Value |
|---|---|
| Molluscum contagiosum | curable — self-limiting virus |
| Genital herpes | managed — lifelong; antivirals control, not cure |
| HPV & genital warts | managed — most clear in 2 yrs; vaccine prevents cancer |
What each one is
Molluscum contagiosum
Molluscum contagiosum is a benign, common, usually mild skin infection caused by a poxvirus called the molluscum contagiosum virus CDC. In adults, genital lesions often spread through sexual contact, though the virus can also pass through ordinary skin-to-skin contact and shared towels or surfaces. It lives in the top layer of skin, so the bumps stay surface-level and self-limited. You can read more about the look and course of molluscum contagiosum bumps.
Genital herpes
Genital herpes is caused by two related viruses, herpes simplex virus type 1 (HSV-1) and type 2 (HSV-2) CDC. Once you're infected, the virus settles into nerve roots and stays for life, reactivating periodically. Most people have no symptoms or symptoms so mild they go unnoticed, and the majority of HSV-2 infections are never diagnosed, which is why it spreads so widely.
HPV & genital warts
Human papillomavirus (HPV) is the most common STI CDC. Dozens of strains exist; low-risk types cause genital warts, while high-risk types can drive cancer years later. Genital warts are the visible, low-risk end of that spectrum. High-risk HPV produces no bumps at all and does its harm invisibly. Our full guide to hpv & genital warts covers the strains and the vaccine in depth.
Symptoms compared
The three conditions feel and look different at their classic worst, but real-world cases are often subtle or atypical.
- Molluscum: small, firm, pearly bumps about 2–5 mm, white, pink, or skin-colored, ranging from pinhead to pencil-eraser size, often with a small dip in the center; they may itch or feel a little sore but usually don't hurt CDC.
- Herpes: a first outbreak brings blisters that break into painful sores taking a week or more to heal, sometimes with flu-like fever, body aches, and swollen glands; sores appear on or around the genitals, rectum, or mouth. Repeat outbreaks are shorter and milder, and some are warned by a prodrome of tingling or burning CDC.
- Genital warts: usually a small bump or group of bumps in the genital area, often soft and flesh-colored, sometimes clustered into a cauliflower-like shape. High-risk HPV is typically asymptomatic and produces no clinical disease at all.
How to tell them apart
A few discriminating features point a clinician in the right direction, though none is definitive on its own:
- Pain: herpes sores are typically painful or tender; warts and molluscum are usually painless or only mildly itchy.
- Texture and shape: molluscum is firm and dome-shaped with a central dimple; warts are often rough or cauliflower-textured; herpes starts as fluid-filled blisters that ulcerate.
- Time course: herpes blisters crust and heal within a couple of weeks and recur; warts and molluscum persist for months without that blister-crust-heal cycle.
- Systemic signs: fever, aching, and swollen glands accompany a first herpes outbreak but not warts or molluscum.
These overlap enough that you usually can't tell them apart by feel. A test settles it, especially because a painless bump could be warts, molluscum, or even an atypical herpes lesion.
Side-by-side comparison
| Feature | Molluscum contagiosum | Genital herpes | Genital warts (HPV) |
|---|---|---|---|
| Cause | Poxvirus (molluscum virus) | HSV-1 / HSV-2 | Low-risk HPV types |
| Classic look | Firm pearly bump with central dimple | Blister that breaks into a sore | Soft, cauliflower-like bump or cluster |
| Pain | Usually painless, may itch | Often painful or tender | Usually painless |
| Course | Self-clears over months | Heals in weeks, recurs | Persists; may recur after treatment |
| Cancer risk | None | None | High-risk types only (not warts) |
| Cure? | Clears on its own; lesions removable | No cure; antivirals control it | Warts treatable; virus may clear |
Testing
Which test you get depends on what's suspected. For herpes with a visible lesion, the standard is type-specific virologic testing of the lesion by NAAT or culture. A swab of the sore works best, and timing matters because a healing lesion sheds less virus CDC. Molluscum and warts are usually diagnosed by a clinician's eye on exam; biopsy is reserved for unclear cases. There's no routine HPV test for the strains that cause warts, and HPV testing isn't recommended to screen men, adolescents, or women under age 30 CDC.
In practice, testing means a urine sample, a self-collected swab, or a quick exam depending on the suspected cause, and it's free or low-cost at health departments, Planned Parenthood, and Title X clinics. If you have a bump you can't identify, get tested rather than guessing. If you're testing because of a recent exposure, check when to test after exposure so you don't test too early to be accurate.
Treatment compared
Each condition is managed differently, and only herpes is lifelong.
Molluscum
Healthy people usually recover without treatment, with bumps clearing on their own in about 6–12 months. Because genital lesions can spread to partners, removal is recommended there. Options include cryotherapy (freezing), curettage (scraping), laser, and salicylic acid.
Genital herpes
Three FDA-approved antivirals — acyclovir, valacyclovir, and famciclovir — control symptoms but do not cure the infection. Taken daily as suppressive therapy, they also protect partners: in a randomized trial of serodiscordant couples, suppressive valacyclovir lowered the risk of passing HSV-2 to a partner by about 48% Corey et al.. People with HSV-2 shed virus on about 10% of days even with no outbreak, and most of that shedding leaves no visible sore JAMA. If you're weighing your options, see our overview of alternative herpes treatments.
Genital warts
Warts can be treated by a clinician or with patient-applied creams: imiquimod 3.75% or 5% cream, podofilox 0.5% solution or gel, or sinecatechins 15% ointment (sinecatechins aren't recommended for immunocompromised or HIV-positive patients) CDC. Treatment removes warts but doesn't always clear the virus. The HPV vaccine does more: it prevents more than 90% of HPV-caused cancers when given at the recommended ages, and Gardasil 9 is about 98% effective against the precancers caused by HPV 16 and 18 American Cancer Society. HPV's reach goes well beyond warts. It causes virtually all cervical cancer, over 90% of anal cancers, and about 70% of throat (oropharyngeal) cancers, which has now overtaken cervical as the most common HPV-related cancer in the US NCI.
Can you have more than one at once?
Yes. These are separate viruses with separate transmission, so nothing stops you from carrying two or three at the same time, and overlapping bumps make self-diagnosis even less reliable. Having one STI also marks the kind of contact that transmits others, so clinicians often test broadly when an unexplained genital lesion shows up.
When to see a clinician
See a clinician for any new genital bump, sore, or blister you can't explain, especially if it's painful, spreading, recurring, or not healing within a couple of weeks. Get checked sooner if you have a fever, swollen glands, or a known exposure to a partner with herpes or HPV. Because the three look so similar, an exam and the right swab beat waiting to see what the bump does.