Male Genital Warts: Symptoms, Causes and Treatment

If you have noticed unusual growths in your genital area, you are not alone. Genital warts are one of the most common sexually transmitted infections in men and are caused by the human papillomavirus (HPV). Most are harmless but some HPV strains carry a cancer risk. Here is what you need to know.

Not sure what you are looking at? The Y Factor's Houston urologists evaluate genital lesions and warts in a private, comfortable setting. Book a same-week appointment at https://theyfactor.com/about/contact

What Are Genital Warts and What Do They Look Like?

‍Genital lesions or genital warts are a common type of sexually transmitted infection (STI) that are usually caused by the human papillomavirus (HPV). There are more than 150 HPV strains that have been identified. Approximately 40 types are known to infect the genital area and these strains are further subdivided into low-risk (6, 11, 42, 43, 44) and high-risk (16, 18, 31, 33, 35, 39, 45, 52, 55, 56, and 58). The difference between high and low risk strains is the associated risk of them developing into cancer. Low risk strains have a low potential for cancer development. The strains that most often cause lesions are strains 6 and 11.

Peak incidence of this type of infection usually occurs between the ages of 16 to 25 but it can occur at any age. The lesions look like cauliflower fleshy pimples that sometimes merge into larger plaques. They can range in size from a few millimeters to several centimeters and may be located in the anogenital area or genital area; especially in areas of high friction. In males this usually involves the glans penis, prepuce (foreskin), shaft, and scrotum, but it can also involve the urethra and anal canal. They can vary in color from whitish to flesh color to hyperpigmented or even redness. Other than being visible, they are usually painless and do not cause any other symptoms, but they can sometimes be painful, itchy, or that may tear or bleed easily.

How Do Men Get Genital Warts?

‍Infection usually occurs through direct contact with someone who has a visible (clinical) or symptom-free (subclinical) HPV lesion. Infections can also occur from direct contact with contaminated surfaces or objects. The lesions can also be self-transferred from one area of the body to another. The HPV virus targets cells in the deeper layer of skin. These are cells located on the underlayer of the skin. The virus cannot easily gain entry to these cells due to an overlying layer of skin cells that create a protective barrier but it is theorized that trauma, abrasion, prolonged moisture or skin breakdown, or microdefects in the skin can disrupt this protective barrier and allow the virus entry.

After the virus gains entry, it goes through a period of replication until it eventually migrates up the layers and develops into a visible clinical lesion. Lesions typically appear within weeks to months after exposure to HPV. The immune system is primarily responsible for controlling the HPV infection and in most healthy individuals the infection is spontaneously cleared and it is estimated that 10%-30% of genital lesions resolve in 3 months of onset without treatment.

Some strong risk factors that can lead to HPV infection include: intercourse at an early age, increase number of sexual partners, increase sexual contact with partners that have had high numbers of sexual partners, or being immunocompromised.

How Are Genital Warts Diagnosed in Men?

Diagnosis is usually made based on clinical presentation alone. Biopsy is generally not needed to diagnose HPV lesions but it is sometimes utilized if there is any ulceration of the lesions or if they are larger than 1 cm. The biopsy sample can also be sent to pathology to determine if it is of the high or low risks strains. External lesions can be diagnosed using direct visualization with a light and sometimes magnification. Internal lesions, such as in the male urethra, can cause changes in the flow of the urinary stream and may need to be diagnosed with the aid of a cystoscope.

What Are the Treatment Options for Male Genital Warts?

‍Being that in most cases they may resolve on their own, treatment is not always indicated. Some treatment options include topical agents such as creams or gels that can be self-applied; cryotherapy or trichloroacetic acid applied by the provider; or surgical excision which can eliminate the lesion in a single visit. Treatment can be challenging and recurrences are common. The type of treatment is dependent on many factors such as size, location, response to previous treatments, desire for self-administration versus provider-administration, cost, coexisting medical conditions, and provider experience. In general, the goal of treatment is to remove or destroy visible lesions.  

Can Genital Warts Be Prevented?

‍The only way to completely prevent HPV infection is by practicing abstinence and avoiding contact with contaminated surfaces or objects. Condoms may help reduce the risk but are not 100% effective. There is also a vaccine available for the prevention of certain strains of HPV infection.

What Else Could It Be? Other Conditions That Look Like Genital Warts

• Pearly penile papules — a normal anatomical variant, not an STI, no treatment needed
• Molluscum contagiosum — a separate viral skin infection that causes small round bumps
• Sebaceous cysts — noncancerous cysts under the skin, usually painless
• Skin tags — soft, noncancerous growths, no STI connection
• Condyloma latum — a lesion associated with syphilis, not HPV
• Seborrheic keratosis — a common noncancerous skin growth, more common in older men
• Carcinoma in situ — a form of cancer that can look similar; confirmed by biopsy

If you have noticed an unusual growth or lesion and want an evaluation, The Y Factor sees men across Houston, Katy, The Woodlands, and Tomball. Same-week appointments are available. Book a consultation online or call our nearest location.

References:

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Beutner KR, Reitano MV, Richwald GA, et al. External genital warts: report of the American Medical Association consensus conference. Clin Infect Dis. 1998 Oct;27(4):796-806.

Brown TJ, Yen-Moore A, Tyring SK. An overview of sexually transmitted diseases. Part II. Am Acad Dermatol. 1999 Nov;41(5 Pt 1):661-77.

Czelusta AJ, Evans T, Arany I, et al. A guide to immunotherapy of genital warts: focus on interferon and imiquimod. BioDrugs. 1999 May;11(5):319-32.

Handsfield HH. Clinical presentation and natural course of anogenital warts. Am J Med. 1997 May 5;102(5A):16-20.

Kirnbauer R, Lenz P, Okun MM. Human papillomavirus. In: Bolognia JL, Jorizzo JL, Rapini RP, eds. Dermatology Vol 1. London: Mosby; 2003:1217-33.

Mansur CP. Human papillomaviruses. In: Tyring SK, ed. Mucocutaneous manifestations of viral diseases. New York, NY: Marcel Dekker; 2002:247-94.

Severson J, Evans TY, Lee P, et al. Human papillomavirus infections: epidemiology, pathogenesis, and therapy. J Cutan Med Surg. 2001 Jan-Feb;5(1):43-60.

Workowski KA, Bolan GA; Centers for Disease Control and Prevention. Sexually transmitted diseases treatment guidelines, 2015. MMWR Recomm Rep. 2015 Jun 5;64(RR-03):1-137.

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