Sexually Transmitted Diseases
Sexually Transmitted Diseases Medical research has brought amazing advances in the treatment of STIs – but there is still great debate about how the battle against STIs should be waged. • Differences rooted in moral opinions about the nature and purpose of sexuality. • Has at times undercut the effectiveness of these advances.
Sexually Transmitted Diseases “Veneral Diseases” now termed STIS Syphilis as the archetypcal veneral disease. First described in the 1490s… Likely that Columbus or his crew mates brought the disease to America. Little sympathy for sufferers at the time – seen as divine intervention for their sexual wrongdoing. By 1918 – 1/22 Americans suffered from syphillis
Venereal Diseases Were Seen as Punishment for Sexual License • Syphilis still exists in America today, but it is much less common than in the past. • The history of AIDS has mimicked that of syphilis in terms of its rapid spread, the initial lack of an effective treatment, and the stigmatization of affected individuals.
STIs Are Still Major Problems in the United States • Nearly 20 million new STI infections occur in the United States each year. • About half of these occur in 15- to 24-year-olds. • 1 in 2 sexually active Americans acquire an STI by age 25. • The United States has the highest incidence of curable STIs of any developed country.
Incidence and Prevalence of STIs in the U.S.
Basic STI Facts
Basic STI Facts (Part 2)
Lice and Mites Are More of an Annoyance Than a Danger • Pubic lice (“crabs”) are very small dark or tan- colored flat insects with clawlike legs that grasp pubic hair and gorge on human blood. – They lay eggs, or “nits,” which they glue onto hairs. – Nits hatch in about a week and repeat the cycle. – Itching is treated with over-the-counter insecticidal lotions or shampoos containing permethrin or pyrethrins (such as Rid) or the prescription insecticide lindane.
Scanning electron micrograph of pubic lice
Lice and Mites Are More of an Annoyance Than a Danger • Scabies is an infestation of parasitic mites that can be transmitted both sexually and nonsexually. – Female mites dig tunnels within hairless layers of skin and live for about 2 months, laying eggs every few days. – Eggs hatch, return to the skin surface, mate, burrow into the skin, and renew the cycle. – Infestation causes severe itching that can be treated with topical application of permethrin lotion.
A scabies mite (left) and a severe case of scabies rash (right)
Trichomoniasis Is Caused by a Protozoan • Trichomoniasis is an infection of the vagina or male urethra and prostate gland caused by the protozoan Trichomonas vaginalis .
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- Winter '08
- Oral sex, Sexually transmitted diseases and infections