Chapter 15 Textbook Notes

Chapter 15 Textbook Notes - Chapter 15- STIs Sexually...

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Chapter 15- STI’s Sexually Transmitted Infection (STI) - a microbial infection (usually caused by viruses or bacteria) spread through intimate contact with another person’s skin or body fluids Some STI’s are relatively mild and treatable, others—such as HIV/AIDS—can be life changing and fatal Unprotected sex - sexual intercourse without a condom or other method of protection o Teenagers and young adults are more likely to have multiple sexual partners and engage in unprotected sex I. Major Types of Sexually Transmitted Infections A. Bacterial STI’s 1. Chlamydia Most common bacterial STI in the US Caused by the bacterium Chlamydia trachomatis Often presents no symptoms—thus people can transmit Chlamydia to sexual partners without realizing they have it Symptoms o In women who do experience symptoms, early signs (1-3 weeks after infection) include abnormal vaginal discharge or a burning sensation while urinating o Later symptoms- abdominal pain, lower back pain, and bleeding between periods o Pelvic Inflammatory Disease (PID )- an infection of the female reproductive tracts that can result from an untreated sexually transmitted infection o This bacteria can be passed to a newborn, causing an eye infection that could lead to blindness if not treated Treatment o Treatable with antibiotics if detected early 2. Gonorrhea The second most common bacteria STI in the US Caused by the bacterium Neisseria gonorrhoeae Primarily infects the linings of the urethra, genital tract, pharynx, and rectum
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Chapter 15- STI’s It may spread to the eyes or other body regions via the hands or body fluids Symptoms o Men-usually notice a white, milky discharge from the penis accompanied by a painful burning urination 2-9 days after intimate contact with an infected partner Only about 20% of males with gonorrhea show no symptoms o Women- far less likely to experience symptoms Usually produce no noticeable symptoms aside from the occasional low-grade fever A woman can thus be unaware she is carrying the disease and risk infecting sexual partners Treatment o Antibiotics are usually effective when detected early o Undetected, untreated gonorrhea can spread to a man’s reproductive and urinary organs, sometimes causing sterility o In woman, it can spread to the reproductive organs, causing PID and potential infertility o Can pass from a woman to her newborn and infect eyes 3. Syphilis Caused by the bacterium Treponema pallidum Generally transmitted via direct contact of sexual organs during intercourse but can also be transmitted via a break in the skin or through deep kissing in which body fluids are
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Chapter 15 Textbook Notes - Chapter 15- STIs Sexually...

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