White spots or patches on the genitals most often come from harmless normal anatomy — Fordyce spots and pearly penile papules — or from two common infections, genital warts (HPV) and molluscum contagiosum. They look so much alike that sight alone can't tell them apart. A simple exam or test gives you a real answer.
Human papillomavirus
Molluscum contagiosum virus
| Item | Value |
|---|---|
| HPV & genital warts | managed — Human papillomavirus |
| Molluscum contagiosum | curable — Molluscum contagiosum virus |
Which STIs cause white spots on the genitals?
Two infections account for most of the STI-related white or pale bumps people notice in the genital area. Each has a fairly distinctive pattern, though plenty of cases blur the lines.
HPV and genital warts
HPV is the most common STI, and certain low-risk types cause genital warts CDC, About HPV. Warts usually show up as a small bump or a group of bumps in the genital area. They can be flesh-colored, pale, or whitish, flat or slightly raised, and sometimes cluster into a cauliflower-like texture. They may itch, but many are painless. For the full picture of how warts feel, see do genital warts hurt? itching, bleeding & feel.
The high-risk HPV types linked to cancer behave differently: most are silent and cause no visible bumps at all CDC, Pink Book. So a clear white spot is more likely a wart type than a cancer-causing type, but you can't read that off the skin. Timing is also hard to pin down. The CDC doesn't set a fixed window for warts; they can appear months or even years after you acquire the virus, and there's no way to know exactly when you got it.
Molluscum contagiosum
Molluscum is a benign, usually mild skin infection caused by a poxvirus, and in adults it's often spread through sexual contact CDC, Molluscum. The bumps are small, firm, and pearly — white, pink, or skin-colored — typically about the size of a pinhead up to a pencil eraser. Each bump tends to have a tiny dimple or dip in the center. They can show up almost anywhere except the palms and soles, sometimes itch or feel sore, and tend to appear in small clusters. For more on the look and course, see molluscum contagiosum bumps.
When it's NOT an STI
Many white spots in the genital area aren't an infection at all. They're normal anatomy that's been there all along and just got noticed.
- Fordyce spots are small, pale or yellowish-white bumps that are simply enlarged oil (sebaceous) glands. They're harmless, not contagious, and commonly appear on the shaft of the penis, the scrotum, or the vulva.
- Pearly penile papules are tiny, dome-shaped, skin-colored or whitish bumps that ring the rim of the glans (head) of the penis. They're a normal anatomical variant, not an infection, and don't need treatment.
- Oral candidiasis (thrush) can cause creamy white patches, but in the mouth rather than on the genitals. People sometimes confuse oral and genital findings.
How to tell them apart
A few features help narrow things down, even if they don't replace a test. Molluscum bumps are firm with that central dimple and tend to crop up in scattered clusters. Genital warts are more variable — soft, sometimes rough-textured, occasionally cauliflower-like. Fordyce spots and pearly penile papules sit in characteristic locations (oil glands along the shaft and scrotum, papules in a neat row around the glans) and don't change much over time.
These overlap too much to call by sight, and several are frequently silent. The symptom won't tell you which one it is, but a test will. Self-diagnosing this is unreliable, and a guess is worth far less than a quick look from a clinician.
Side-by-side comparison
| Cause | STI? | Typical look | Where | Tell-tale clue |
|---|---|---|---|---|
| Genital warts (HPV) | Yes | Small bump or cluster; pale to flesh-colored; may be cauliflower-like | Anywhere in the genital area | Can itch; texture varies; may appear months to years after exposure |
| Molluscum contagiosum | Yes (often sexual in adults) | Firm, pearly, white/pink/skin-colored bumps | Almost anywhere (rarely palms/soles) | Small central dimple; scattered clusters |
| Fordyce spots | No | Pale/yellowish small bumps | Penile shaft, scrotum, vulva | Enlarged oil glands; stable over time |
| Pearly penile papules | No | Tiny dome-shaped whitish bumps | Rim of the glans (penis head) | Even row around the corona; normal anatomy |
How it's tested
Testing depends on what's suspected — often a quick visual exam, sometimes a self-collected swab or a urine sample. There's no routine HPV test for men, adolescents, or women under age 30, so warts and molluscum are usually diagnosed by how they look on exam rather than a lab test CDC, Anogenital Warts. Care is free or low-cost at health departments, Planned Parenthood, and Title X clinics, with results usually back in a few days. See the full how-to on the page to get tested.
What to do next
Don't pick, squeeze, or shave over the spots, since that can spread molluscum or irritate warts. Book an exam so a clinician can identify what you're seeing. If it turns out to be Fordyce spots or pearly papules, you'll likely be sent home with no treatment needed. If it's warts or molluscum, several options exist, and the clinical overview can walk you through them CDC, Molluscum clinical. If you had a recent exposure and want to know how soon results are reliable, check when to test after exposure.
Red flags — when to get seen urgently
- Bumps that bleed, ulcerate, or grow quickly, which deserve prompt evaluation.
- Spreading clusters, severe pain, or signs of infection like spreading redness, warmth, or pus.
- A new lesion in someone with a weakened immune system (for example, HIV or immunosuppressive medication), since molluscum can become extensive.
- Any sore that opens up or won't heal, which points away from these benign causes and toward something a clinician needs to see.