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Section 22.2 Kinds of STIs Slide 1 of 19 Objectives Identify three of the most common STIs, including their symptoms and treatments. List four other STIs.

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Presentation on theme: "Section 22.2 Kinds of STIs Slide 1 of 19 Objectives Identify three of the most common STIs, including their symptoms and treatments. List four other STIs."— Presentation transcript:

1 Section 22.2 Kinds of STIs Slide 1 of 19 Objectives Identify three of the most common STIs, including their symptoms and treatments. List four other STIs and describe their symptoms. Section 22.2 Kinds of STIs Know when a person should seek treatment for an STI.

2 Section 22.2 Kinds of STIs Slide 2 of 19 Myth All STIs can be treated with antibiotics. Fact STIs caused by viruses cannot be treated with antibiotics. Antibiotics are only used to treat STIs caused by bacteria. Several STIs caused by viruses cannot be cured and can cause lifelong health problems. Do you think most teens are aware that some STIs are not easily treated? And that some may persist for years? Explain your answer.

3 Section 22.2 Kinds of STIs Slide 3 of 19 STIs are caused by pathogens, including bacteria, viruses, and protozoans. The Most Common STIs STIs can be spread from person to person through blood and body fluids such as semen, vaginal secretions, and breast milk. Three of the most common STIs in the United States are trichomoniasis, human papilloma virus, and chlamydia.

4 Section 22.2 Kinds of STIs Slide 4 of 19 Trichomoniasis The STI known as trichomoniasis (trik uh moh NY uh sis) is caused by a protozoan that infects the urinary tract or vagina. In males, if trichomoniasis is not treated, it can lead to inflammation of the lining of the urethra, called urethritis (yoor uh THRY tis). In females, untreated trichomoniasis can lead to vaginitis (vaj uh NY tis), which is a vaginal infection or irritation.

5 Section 22.2 Kinds of STIs Slide 5 of 19 The most common viral STI in the United States is caused by the human papilloma virus (pap uh LOH muh), or HPV. Human Papilloma Virus Some forms of HPV cause genital warts. One of the most serious conditions associated with HPV infection is cervical cancer in women.

6 Section 22.2 Kinds of STIs Slide 6 of 19 The most common STI caused by bacteria in the United States is chlamydia (kluh MID ee uh). Chlamydia Infected males often experience painful, frequent urination and discharge from the penis. In females, chlamydia often has no symptoms other than a yellowish vaginal discharge. If untreated, chlamydia can cause a serious infection of the reproductive organs called pelvic inflammatory disease, or PID.

7 Section 22.2 Kinds of STIs Slide 7 of 19 Click above to go online. For: More on sexually transmitted infections

8 Section 22.2 Kinds of STIs Slide 8 of 19

9 Section 22.2 Kinds of STIs Slide 9 of 19

10 Section 22.2 Kinds of STIs Slide 10 of 19

11 Section 22.2 Kinds of STIs Slide 11 of 19 Hepatitis B and C, also called HBV and HCV, are sexually transmitted infections that attack the liver. Other STIs They are also spread by blood-to-blood contact. Hepatitis Common symptoms are fatigue, abdominal pain, nausea, and jaundice. Both infections may lead to liver cancer or cirrhosis (sih ROH sis), a condition in which normal liver tissue is replaced by scar tissue. There is no cure for HBV or HCV.

12 Section 22.2 Kinds of STIs Slide 12 of 19 A bacterial STI that infects the urinary tract of males and females and the reproductive organs of females is gonorrhea (gahn uh REE uh). Other STIs Males usually have a thick, puslike discharge from the penis and painful urination. Gonorrhea Females sometimes experience painful urination and a puslike discharge from the vagina or urinary tract.

13 Section 22.2 Kinds of STIs Slide 13 of 19 Another STI caused by a virus is genital herpes (HUR peez). Other STIs The virus that causes genital herpes is the herpes simplex virus. Genital Herpes In some people, the symptoms may be hardly noticeable. In other people, symptoms may be more severe, including painful blisters that appear on or around the genitals. There is no cure for genital herpes.

14 Section 22.2 Kinds of STIs Slide 14 of 19 Syphilis (SIF uh lis) is a serious bacterial STI that progresses through three distinct stages. Other STIs In the first stage, a painless sore called a chancre (SHANG kur) appears at the site of exposure. Syphilis In the second stage, sores appear in the mouth and flulike symptoms develop. In the third stage, bacteria attack internal parts of the body. Eventually, untreated syphilis can cause brain damage, paralysis, and heart disease.

15 Section 22.2 Kinds of STIs Slide 15 of 19

16 Section 22.2 Kinds of STIs Slide 16 of 19 People who participate in high-risk behaviors should get medical checkups every six months. Seeking Treatment Individuals who suspect they may be infected should seek prompt medical attention. Depending on the symptoms, the doctor may need to do a physical exam or a blood test. If a person finds out that he or she has an STI, it is also important to notify any sexual partners, so they can seek treatment as well.

17 Section 22.2 Kinds of STIs Slide 17 of 19 Vocabulary trichomoniasisA sexually transmitted infection caused by a protozoan that infects the urinary tract or vagina. urethritis Inflammation of the lining of the urethra. vaginitis A vaginal infection or irritation. human papilloma virus A very common viral sexually transmitted infection. chlamydiaA very common sexually transmitted infection caused by bacteria. pelvic inflammatory disease A serious infection of the female reproductive organs that can lead to infertility or an ectopic pregnancy.

18 Section 22.2 Kinds of STIs Slide 18 of 19 Vocabulary gonorrhea A bacterial sexually transmitted infection that infects the urinary tract of males and females and the reproductive organs of females. genital herpesA sexually transmitted infection caused by the herpes simplex virus. syphilisA serious bacterial sexually transmitted infection that progresses through three distinct stages. chancre A painless sore that appears during the first stage of syphilis infection.

19 Section 22.2 Kinds of STIs Slide 19 of 19 End of Section 22.2 Click on this slide to end this presentation.


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