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HPV Screening: Cervical cancer prevention before symptoms appear

February 13 / 2026

HPV Testing

 

 

 

     HPV (Human Papillomavirus) Testing is a crucial screening step to prevent cervical cancer before symptoms even appear. As one of the most common cancers in women, this test helps you identify your risk at an asymptomatic, early, or pre-cancerous stage, allowing for timely treatment. Today, Ramkhamhaeng Hospital will clarify all doubts and provide full details regarding HPV testing and care planning. This information is vital for both women and men, covering treatment methods, symptom observation, and safe locations for HPV vaccination.

 

What is HPV and how is it treated?

There are over 100 strains of the HPV (Human Papillomavirus), but only about 40 strains cause disease in humans. Infection occurs through direct contact, such as sexual activity involving the genitals, anus, mouth, or throat. Importantly, it often shows no symptoms and can take 10-20 years to develop into cancer. Common key strains include:

 

  • Strains 6 and 11: Cause genital warts.
  • Strains 16 and 18: Cause cancers in the genital and anal areas.

 

HPV Infection

     Infection usually occurs through direct contact, such as sexual intercourse. Both men and women can be infected in the genitals, anus, mouth, and throat. Generally, infected individuals show no symptoms, but the virus can take 10-20 years to develop into cancer.

 

HPV Vaccination

Since those infected often don't know it, they can unknowingly spread the virus to others. HPV is a silent threat that leads to serious diseases like cancer. While there is currently no cure for the HPV virus itself, it can be prevented through vaccination. In Thailand, three types are available:

 

  • 2-valent Vaccine (Covers strains 16 and 18)
  • 4-valent Vaccine (Covers strains 6, 11, 16, and 18)
  • 9-valent Vaccine (Covers strains 6, 11, 16, 18, 31, 33, 45, 52, and 58)

 

 

Vaccination is an excellent way to prevent infection and reduce cancer risk, combined with safe sexual behavior.

 

 

Diseases Linked to HPV Infection

HPV is a major cause of several types of cancer, such as:

 

1. Cervical Cancer

     High-risk HPV strains, such as 16 and 18, are the primary cause of cervical cancer, found in nearly all cases (99.7%). This virus is transmitted through sexual contact. High-risk strains can lead to cervical cancer, while low-risk strains cause genital warts.

 

2. Vaginal Cancer

Vaginal cancer is a rare cancer that usually starts in the cells lining the vagina. Primary risk factors include:

 

  • HPV infection through sexual intercourse
  • Age 60 or older
  • A history of abnormal cells in the vagina or cervix
  • Use of Diethylstilbestrol (DES)
  • Smoking and HIV infection

 

 

Since this disease is linked to HPV, vaccination and protection during sex can help reduce the risk.

 

 

3. Anal Cancer

Anal cancer often presents symptoms similar to hemorrhoids, such as abnormal bowel movements, narrowing of the stool, or anal discharge. The main cause is HPV infection, especially strains 16 and 18, transmitted through contact or sex. Other risk factors include:

 

  • Increasing age
  • Smoking
  • Weakened immune system (e.g., HIV)
  • High-risk sexual behavior, such as having multiple partners

 

 

Treatment depends on the stage of the disease, severity, and the patient's overall health.

 

 

4. Oropharyngeal (Mouth and Throat) Cancer

Mouth and throat cancer is a serious disease caused by abnormal cells in the oral cavity and throat that can grow and spread. Key symptoms include mouth sores, lumps, voice changes, difficulty swallowing, and pain or numbness in the mouth. Other contributing risk factors include:

 

  • Alcohol consumption
  • HPV virus
  • Smoking
  • Betel nut chewing

 

5. Genital Warts

     Genital warts are a sexually transmitted infection caused by low-risk HPV strains such as 6 and 11. They appear as warts or rough growths around the genitals, groin, or anus. Symptoms may include itching, burning, or abnormal discharge. The virus thrives in moist environments. While the warts can be treated, the HPV virus remains in the body. Prevention is possible through HPV vaccination.

 

 

HPV Testing

 

 

What are the symptoms of an HPV infection?

  • No symptoms / Asymptomatic
  • Symptomatic cases, which may include:
    • Abnormal vaginal bleeding
    • Associated symptoms like pelvic pain, swollen lymph nodes in the groin, painful urination, or:
      • Genital warts: Small bumps appearing on or around the genitals and anus.
      • Abnormal discharge: May have a foul odor, be blood-tinged, or be unusual in volume.
      • Genital abnormalities: Such as sores, lumps, or changes in skin texture.

 

Who is at risk of HPV infection?

It is important to understand that HPV is spread through sexual contact, and even those with only one partner are at risk. High-risk groups include:

 

  • Those with frequent sexual activity, especially with multiple partners.
  • Adolescents and those who began having sex at a young age.
  • Immunocompromised individuals, such as those with HIV or using immunosuppressants.
  • Individuals with a history of STIs, such as herpes or gonorrhea.
  • Smokers, as smoking weakens the immune system.

 

Other Risk Factors

  • Pregnancy at a young age
  • Having multiple children
  • Not using condoms

 

How to Prevent HPV Infection

HPV is a silent threat, but it can be prevented. The best prevention methods include:

 

  • HPV Vaccination: Acts as a shield, significantly reducing the risk of infection.
  • Regular Health Check-ups: To screen for HPV and cell abnormalities early on.
  • Safe Practices: Such as practicing safe sex and consistently using condoms.

 

 

HPV Testing

 

When should you get the HPV vaccine and how many strains are recommended?

The HPV vaccine is the best shield against cervical cancer, especially when administered at a young age when the body builds immunity most effectively.

 

  • Ideal Age: Both boys and girls should receive the vaccine starting at age 9.
  • Number of Strains: Currently, 2, 4, and 9-valent vaccines are available. Selection depends on several factors; please consult a physician.
  • Benefits: Helps prevent cancers caused by HPV, including cervical, vulvar, vaginal, anal, and oropharyngeal cancers, as well as genital warts.
  • Recommendation: Consult a doctor to plan the most suitable vaccination schedule for you.

 

Trust in Safety with HPV Vaccination at Ramkhamhaeng Hospital

     Rest assured of safety at Ramkhamhaeng Hospital, an internationally accredited facility with expert personnel and certified vaccines. Our vaccines can prevent up to 90% of cervical cancer. While minor side effects may occur, they typically resolve on their own within 1-2 days. For further inquiries or to book a health check-up, please consult our doctors directly.