Sexually Transmitted Diseases

Introduction

At any age, sexual activity has its risks. During the adolescent andyoung-adult years, the risks are magnified considerably. Still, in spite of the risks, many adolescents choose to engage in sexual activity. Even for the most mature teenager or young adult who takes all the proper precautions, sex still can be a risky business.

Sex during adolescenceis risky for several reasons. First, adolescents may have sex because they are pressured into it, either by a partner or by an adult in an abusive relationship. Sex under these circumstances can lead to depression and feelings of low self-esteem. Another major negative consequence of sexual activity among adolescents is pregnancy and all that it implies. Finally, there aresexually transmitted diseasesorinfections(STDsorSTIs), or what used to be called venereal diseases (VD).

Adolescents have thehighest rates of sexually transmitted diseasesof any age group, and when we calculate the rate of STIs among sexually active teens rather than all teens, the numbers are even higher. Every year, approximately three million adolescents in the United States, about one in four, acquire STIs. In one act of unprotected sexual intercourse,an adolescent womanhas a one-percent chance of acquiring HIV, a 30-percent chance of getting genital herpes, and a 50-percent chance of becoming infected with gonorrhea. And when we consider that chlamydia infection occurs about four times more often than gonorrhea, we can see how prevalent this problem is. This is without considering the most common STI,human papilloma virus(HPV) infection, which can be the cause of cancer of a woman's cervix when she gets older.

青少年危险因素

Why are teenagers at such great risk for getting these serious infections? There are several reasons. First, adolescents are prone to having more than one sex partner-not at the same time, but sequentially. In other words, kids may have several successive boy- or girlfriends during their teenage and young-adult years. If they have sex with more than one of these partners, they are increasing their chances of coming in contact with germs that cause STIs. Teenagers often have sex without thinking of the consequences. They are less likely to take precautions, such as using condoms, to prevent the spread of disease. Another reason teens are at greater risk is that they may not have learned ways of saying no. They may feel that they have to go along with their partners and have sex, even if they really don't want to. Finally, in teenage girls, the mucous membranes of the vagina may still be immature for three or four years after they start to have periods, and this immaturity can increase their chances of getting STIs.

Varieties of STIs

STIs are infections caused by some type of germ. Some are caused by viruses, some are caused by bacteria, and one is even caused by protozoa, little one-celled animals like amoebas or paramecia. Let's describe the various ones and tell a little about them.

Gonorrhea

One of the most well-known STIs is gonorrhea. It is caused by a bacteria called Neisseria gonorrhea and it is spread almost exclusively by sexual contact. Gonorrhea can cause an infection of theurethra(tube in the penis) in men and of thecervix(the canal leading from the vagina to the uterus) in women. Gonorrhea can be quiet and not produce any symptoms, but frequently it causes pus to come out of the penis or cervix, and it can cause a lot of discomfort. In both boys and girls, gonorrhea can travel up into more internal reproductive organs and cause damage to the tubes in men that transport sperm and the tubes in women that transport the eggs. This means that gonorrhea can really hurt someone's chances of having children later on in life.

Chlamydia trachomatis

Another bacterial infection is caused by Chlamydia trachomatis. This infection is very much like that caused by gonorrhea, but it usually has fewer symptoms, so it may not be treated and it may quietly cause more damage. Both chlamydia and gonorrhea can be prevented by abstinence, of course, and by using condoms every time a teenager or young adult has sex.

Syphilis

Another STI caused by a bacteria is syphilis. Syphilis is a famous disease that is nowhere as near as common as gonorrhea or chlamydia. It can be very serious and damaging, especially to babies who are born to women who have syphilis. Syphilis caused much suffering in the late 19th and early 20th centuries, but it is not that common anymore.

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Human papilloma virus

Human papilloma virus (HPV) is far and away the most common STI. Usually men and women with HPV don't know they have it. When they do know it, it is typically because some types of HPV (there are lots of different types) cause warts to appear on male and female genital organs. The sneaky and dangerous thing about HPV is that it can cause flat warts to appear on a woman's cervix, and she may never know it unless she has a test called a Pap smear each year. All girls who are sexually active should have a yearly Pap smear to see if they have HPV infection. There are some treatments that can help get rid of the flat warts of HPV and the visible ones too, but we don't yet know how to get rid of the virus. Flat warts can lead to cancer of the cervix, so avoiding HPV is very important.

艾滋病毒

Probably the most famous STI at the beginning of the 21st century is human immunodeficiency virus (HIV), the cause of the acquired immunodeficiency syndrome or AIDS. AIDS may be the worst STI ever. Although there are drugs that can keep AIDS quiet for a period of time, there are no cures. Globally, AIDS is a catastrophe of the highest order. Millions and millions of people in Africa, Asia, and South America are infected with HIV, and millions of people have died and are dying from AIDS. Because of the death of countless parents in Africa from AIDS, there are now millions of orphans there. AIDS can be prevented by abstinence or by using safe-sex practices, especially using condoms.

Other STIs

There are other diseases that are transmitted by sexual contact. They include the protozoal one, trichomoniasis, and other viral and bacterial diseases such as hepatitis B and ones too rare to mention here. One that should be mentioned is a viral STI called herpes. This STI is caused by a virus just like the one that causes cold sores on the mouth or lips. Herpes infection is often recurrent. Painful ulcers occur on the vagina or penis. This infection can also be transmitted to babies when they're born.

Detection

我们很幸运,大多数性传播感染可以发现相当easily. The trouble is that many of them are silent until they have caused a lot of damage. The way to get around this, and to find them before they do much harm, is for girls who are sexually active to get checked each year by having apelvic examination.STI tests are part of a pelvic exam. Young women who have had sex with drug dealers or users, or bisexuals or gay men ought to be tested for HIV and syphilis, too. These tests are blood tests. Boys can be tested for STIs initially just by having their urine checked. If their urine shows the possibility of an STI, then they should have cultures for the germs done. HPV is not routinely looked for in men because it is almost impossible to treat.

Treatment

The STIs caused by bacteria can frequently be treated with antibiotics, just by one dose by mouth or by a needle. Viral STIs are the tough ones. There aren't any cures, but there are some medicines, especially for HIV and herpes, that can keep the infections from doing much harm, at least for a while.

Prevention

Preventing STIs is easy: Don't have sex, or if you do, use condoms. Also, know the sexual history of the person with whom you are having sex. Learn if they've had sex with other people who might have carried an STI germ. If a teen or young adult plans to have sex, he or she should always have condoms available. Never assume that your partner will have one on hand. And learn how to say no when you don't want to have sex. A big help in avoiding STIs is to avoid using alcohol and drugs. Alcohol and drugs can make someone take bigger risks than if he or she were sober. STIs can be avoided most of the time. But it takes work to do so.