Genital warts

Genital warts are a common sexually transmitted infection (STI) caused by specific strains of the human papillomavirus (HPV). They present as small, flesh-colored bumps or groups of bumps in the anal or genital region. While often asymptomatic, they can cause itching, discomfort, and significant Psychological distress.

Signs and symptoms

The primary manifestation is the appearance of soft, moist, pink or flesh-colored swellings in the genital area. These growths can be raised or flat, single or multiple, and sometimes form a cauliflower-like shape. Common sites include the Vulva, Penis, Scrotum, Cervix, and around or inside the Anus. Symptoms may include itching, burning, or bleeding during intercourse, though many individuals experience no physical discomfort. The Centers for Disease Control and Prevention notes that warts can appear weeks or months after initial HPV infection.

Causes and transmission

Genital warts are caused by infection with certain types of Human papillomavirus, predominantly HPV 6 and HPV 11, which are classified as low-risk, non-oncogenic strains. Transmission occurs primarily through direct skin-to-skin contact during vaginal, anal, or rarely oral sex with an infected partner. The World Health Organization emphasizes that the virus is highly transmissible, and condoms do not provide complete protection as HPV can infect areas not covered by the latex. Factors increasing risk include a high number of sexual partners, co-infection with other STIs like HIV, and conditions causing Immunosuppression.

Diagnosis

Diagnosis is typically made through a visual clinical examination by a healthcare provider, often a dermatologist or gynecologist. In cases of uncertainty, a vinegar (acetic acid) solution may be applied to turn warts white for better visibility. For internal warts, such as on the Cervix, a Colposcopy may be performed. A definitive diagnosis can be confirmed via Biopsy and subsequent PCR testing to identify the specific HPV type, though this is not routine. The American Cancer Society distinguishes this process from Pap smear screening, which is for detecting Cervical cancer caused by high-risk HPV types.

Prevention

The most effective preventive measure is vaccination with the 9-valent HPV vaccine, which protects against HPV 6 and HPV 11. The Advisory Committee on Immunization Practices recommends routine vaccination for adolescents. Consistent use of condoms can reduce, but not eliminate, transmission risk. Mutual monogamy and limiting the number of sexual partners are also advised. For individuals with HIV or other immunocompromising conditions, close monitoring and adherence to ART are important. Public health campaigns by organizations like the World Health Organization promote widespread vaccination to achieve herd immunity.

Treatment

There is no cure for the underlying HPV infection, but treatments aim to remove visible warts. Patient-applied therapies include Podophyllotoxin and Imiquimod, which stimulate the Immune system. Provider-administered treatments include Cryotherapy with Liquid nitrogen, chemical cautery, and surgical removal via electrosurgery, laser ablation, or Curettage. The choice depends on wart size, number, location, and patient preference, as guided by protocols from the Centers for Disease Control and Prevention. Recurrence is common, as the virus may persist in surrounding skin.

Prognosis and epidemiology

Genital warts are among the most prevalent STIs globally. The World Health Organization estimates that most sexually active adults will acquire HPV at some point, with a significant proportion developing visible warts. While the warts themselves are benign and rarely lead to Cancer, they can cause substantial Psychological distress and social stigma. Spontaneous regression can occur, but recurrence is frequent. Epidemiological studies, such as those from the National Health and Nutrition Examination Survey (NHANES), show peak incidence in young adults aged 17–33. The introduction of the HPV vaccine in programs like the National Immunization Program in Australia has led to marked reductions in prevalence.