This web page was created for anyone who's interested in sexually
transmitted disease-Chancroid. Chancroid is a highly infected disease that
has occurred in the United States and other foreign countries currently.
Both men and women can be infected by sexual contact with or without any
protections. The main purpose of this web page is to provide basic and
specific information about Chancroid with graphics and bibliographies, which
the reader can acquire more information presented in the website.
sexually disease (STDs) which can be transmitted by any sexual contact
by the bacterium
in the United States in the late 1980s
-It's common in
and sporadic in temperate countries
- In the U.S, the peak of incidence rate occurred in
1987 with 5035 cases reported to the Centers for Disease Controls
Prevention (CDC), but the cases has declined steadily with 773 cases
reported in 1994.
- For the incidence rate in the U.S. of 15-25 year
olds, primarily chancroid occur in young adults. the peak incident in both
sexes in the 20-39 year age group. Males outnumbered females by a ratio of
- The complications include phimosis, urethral
stricture, urethral fistula, and severe tissue destruction. Usually, if
the patient follow doctor's instruction with antibiotics, patients'
conditions can be cured within one week.
- Characteristics: difficult to grow on routine
culture, and still need special media. The organism is transmitted by
direct contact through the skin, presumably through minor abrasions. After
an incubation period of 2-10 days, a papule or pustule erupts that erodes
to form a painful ulcer with ragged margins. The ulcer may be quite deep,
and more than one half of patients have multiple ulcers.
- Bacteria: Haemophilis ducreyi
- The past infection with chancroid doesn't make a
person immune. Re-infection can readily occur immediately after cure.
There's no evidence of natural-resistance.
- Common modes of transmission: oral, anal, and
vaginal sex. The infection can spread to other part of body by minor
abrasions, physical contact, rubbing, and scratching. Others are likes an
uncircumcised man is more likely to contact the disease than a circumcised
man; any sexual active person can be infected, and if a person does not
practice personal hygiene it's easier for the infection to be transmitted.
- The risk factors:
- Contact between scraped or broken
infected skin increases the likelihood of transmission.
- Ejaculation is not necessary for the
infection to be spread.
- Even if using a condom, sores may be
present on areas not protected by the latex and can cause infection
anywhere they contact receptive tissue.
- The bacteria are more likely to invade
the sexual organs at the point of a pre-existing injury, such as a small
cut or scratch.
- First signs of infection appear from 3-5
days and up to 2 weeks after contact, and usually a tender, raised bump
develops where the bacteria entered the body:
- Chancroid is usually
- Culture or biopsy
- Gram Stain
- Microscopic examination of a smear
sample taken from the patient's sores
- How this disease is
most commonly treated:
Chancroid is commonly treated with antibiotic
with high percentage of
success and also it can be treated by dose
therapy or drain saline with
a needle under local anesthetic.
Antibiotics, such as erythromycin, trimethoprin, or ciprofloxacin, which
are all given up for 2 weeks. And there's a drug treatment to treat this
disease by following doctor's instructions.
1) Erythromycin 500 mg qid x
2) Co-trimoxazole Tab. 2 bd x 1-2 weeks
3) Amoxicillin 500 mg + Clavulanic acid 125 mg tds x 1- 2 weeks
4) Ciprofloxacin 500 mg bd x 3 days
Ceftriaxone 250 mg IMI
2) Spectinomycin 2 gm IMI
3) Co-trimoxazole eight tablets orally
4) Ofloxacin 400 mg orally
measures against infection:
against the disease are important and should be stressed. Simply washing
the exposed parts with soap and water does not prevent transmission of
chancroid. Condoms, when correctly used, will prevent transmission in
most cases. The best way to achieve an effective control is to reduce
the reservoir of infection. This means that all sexual contacts should
be traced and treated promptly.
Merck &co., inc.
1995. 13 May 2003
Dr. Y.M. Chancroid. 1995. Hong Kong Academy of Medicine and the Hong
Kong Medical Association. 13 May 2003
"Chancroid." The Gale
Encyclopedia of Alternative Medicine . 4 vols. New York: Gale Group,
2001Chancroid. New York State Department of Health. 13 May 2003
Abbuhl, Stephanie M.
Chancroid. Ed. David F. Brown. 21 May 2001. 13 May 2003
June 1998. U.S. Department of Health and Human Services. 13 May 2003
1994. American Social Health Association. 13 May 2003
22 Mar. 2000. Calgary Birth Control Association. 13 May 2003
10 Jan. 2003. The University of Iowa. 13 May 2003
my first impression about this disease is
disgusting, and unbelievable. Before starting my research, I thought
chancroid was like other sexually transmitted disease, I didn't think
getting infected by chancroid wasn't a big deal. Later on, my thoughts
changed through the course of my research. I learned a lot of information
about its transmission, preventions, motilities, incubations, and the
causes...etc, which make me feel people no matter female or male, we all
should be aware of it.
Copyright Teresa Huang
Ms day Physiology Period 3
Last updated: 05/19/03.