Genital warts are one of the most common sexually transmitted infections (STIs) in the UK. While they’re usually harmless, they can be uncomfortable, emotionally distressing, and easily passed on through close contact.
Understanding what causes genital warts, and how they spread, helps reduce the risk of transmission and ensures you know when to seek professional advice or treatment.
What Are Genital Warts?
Genital warts are small, fleshy growths or bumps that appear on or around the genital or anal area. They may be:
- Flat or raised
- Smooth or cauliflower-shaped
- Flesh-coloured, pink, or slightly darker than the surrounding skin
They can appear singly or in clusters, sometimes itching or causing mild irritation, though many people have no pain at all.
These warts are caused by human papillomavirus (HPV) infection. There are more than 100 HPV strains, but only a few are responsible for genital warts.
What Causes Genital Warts?
The main cause is infection with low-risk strains of HPV, specifically types 6 and 11. These strains affect the surface layers of the skin and trigger abnormal cell growth, leading to visible warts.
HPV enters the body through tiny cuts or friction points in the skin during close contact. Once inside, the virus can stay dormant for weeks, months, or even years before any signs appear. Some people never develop visible warts but can still carry and pass on the virus.
| HPV Type | Common Association | Risk Level |
|---|---|---|
| HPV-6 | Genital warts (majority of cases) | Low |
| HPV-11 | Genital warts | Low |
| HPV-16, HPV-18 | Cervical and other cancers | High (not wart-causing) |
It’s important to note that the strains causing warts are different from the high-risk strains linked to cancer.
How Do Genital Warts Spread?
HPV spreads through skin-to-skin contact, not through bodily fluids. Penetration isn’t required for transmission, the virus only needs direct contact between infected and uninfected skin.
Most common ways HPV spreads:
- Vaginal, anal, or oral sex with an infected partner
- Genital-to-genital contact without penetration
- Sharing uncleaned sex toys
- Touching infected skin and then another area of your body
Less common routes:
- From mother to baby during childbirth (rare)
- From one area of your body to another via touch or shaving
Condoms reduce the risk but don’t completely prevent transmission, as HPV can infect skin not covered by the condom (e.g. the base of the penis or surrounding areas).
Who Is Most at Risk?
Genital warts can affect anyone who is sexually active. However, risk is higher if you:
- Have unprotected sex with new or multiple partners
- Began sexual activity at a younger age
- Have a weakened immune system (for example, due to illness or medication)
- Already have another STI
- Are unvaccinated against HPV
Can You Get Genital Warts Without Sexual Contact?
It’s uncommon, but possible. HPV can survive briefly outside the body and, in rare cases, be transmitted through:
- Shared sex toys
- Prolonged close contact between genital areas
- Birth (from mother to baby)
However, almost all cases are linked to sexual contact of some form.
How Long After Exposure Do Warts Appear?
HPV’s incubation period varies greatly. Some people develop warts within weeks, others after months or even years. Because of this, it’s often impossible to tell exactly when or from whom the virus was contracted.
The virus may also remain dormant, meaning you can test positive or carry HPV without ever developing visible warts.
Can Genital Warts Go Away on Their Own?
Sometimes. The immune system can naturally suppress HPV, and visible warts may disappear within 6 to 12 months.
However:
- The virus can remain in your skin even after the warts clear.
- Warts can return, especially if your immune system weakens.
- Treatment is recommended to reduce discomfort and lower the risk of passing it on.
Professional treatments include cryotherapy (freezing), electrocautery (burning), laser removal, and prescription creams that help your immune system fight the virus locally.
How to Prevent Genital Warts
1. HPV Vaccination
The HPV vaccine (Gardasil 9) protects against the strains that cause most genital warts and HPV-related cancers. It’s routinely offered to teenagers but can also be given privately to adults.
2. Use Condoms and Dental Dams
They don’t give full protection, but they significantly reduce risk by covering most of the infected area.
3. Avoid Sharing Sex Toys
Always use condoms on toys and clean them thoroughly between uses.
4. Regular Sexual Health Checks
If you’re sexually active, especially with new partners, routine STI testing helps catch and manage infections early.
5. Maintain Good Immune Health
A strong immune system clears HPV faster. Sleep, balanced nutrition, and stress management all help.
When to See a Doctor
You should book a consultation if you notice:
- New or persistent lumps, bumps, or growths in the genital or anal area
- Itching, irritation, or discomfort that doesn’t settle
- Recurring warts after past treatment
A clinician can confirm whether it’s a wart or another condition (such as a skin tag, pearly penile papule, or Fordyce spot) and recommend the safest removal method.
