What Causes Genital Warts
Warts are caused by viruses. They are sometimes referred to as ano-genital
warts or medically as condyloma acuminata. There is a family of viruses called
HPV which produce all kinds of warts in different parts of our skin.
The different subtypes of HPV are given numbers. There are over 100 subtypes
of HPV. The majority of anogenital warts are HPV type 6 and 11 and these
subtypes are entirely harmless other than giving bumps on the skin.
TThey are sexually transmitted. Skin to skin contact of the genitals and the
mouth are the most common way that the virus are passed. There are other
subtypes of HPV that increase the risk of cervical cancer. Vaccines to prevent
these precancerous infections have recently been introduced.
The incubation period is usually between one month and one year.
The prevalence of genital warts depends on a number of risk factors, but
appears to be highest in people between 15-25 years of age. Two thirds of those
infections that are detected are in women. The numbers of people with genital
warts has increased dramatically over the last 25 years. It is thought that
about 15% of the sexually active population are infected and that about 1% have
genital warts.
How are genital warts diagnosed
Visual examination of the skin
Most of the time warts are identified by looking for irregularities, lumps,
bumps, roughness of the skin, or skin color changes.
Most of the time the diagnosis will be clear to a doctor experienced with
this condition.
Applying 5% acetic acid or vinegar to the skin or cervix can highlight
irregularities and different skin thicknesses that make it suspicious for warts.
This produces white patches in the skin in about five minutes because of the
change in surface quality, but is not a change specific for HPV infection.
Biopsy of the skin may be performed if:
The diagnosis is uncertain.
Warts not responding to standard therapy.
The condition worsens during therapy.
The patient's immune system is compromised.
The warts are pigmented, bleeding, ulcerated or firm, a possible sign of
precancer.
没有评论:
发表评论