Haemophilus ducreyi
A chancroid is an STD characterized by painful sores on the genitalia. Chancroid is a disease known to be spread solely through sexual contact.
Causes
Chancroid is a bacterial infection caused by the organism Haemophilus ducreyi. It is a disease found primarily in developing countries.
Only a few hundred cases a year are diagnosed in the United States. The majority of individuals in the U.S. diagnosed with chancroid have traveled outside the country to areas where the disease is known to occur frequently.
[Uncircumcised men are at 3 times the risk of circumcised men for contracting chancroid from an infected partner. Chancroid is a risk factor for contracting the HIV virus.]
Symptoms
After an incubation period of one day to two weeks, chancroid begins with a small bump that becomes an ulcer within a day of its appearance. The ulcer characteristically:
- Ranges in size dramatically (from 1/8 inch to 2 inches across)
- Is painful
- Has sharply defined borders
- Has irregular or ragged borders
- Has a base that is covered with a grey or yellowish-grey material
- Has a base that bleeds easily if traumatized or scraped
About half of infected men have only a single ulcer. Women frequently have 4 or more ulcers. The ulcers appear in specific locations.
Common locations in men (most common to least common)
Common locations in women
In women the most common location for ulcers is the labia majora. "Kissing ulcers" may develop. These are ulcers that occur on opposing surfaces of the labia. Other areas such as the labia minora, perianal area, and inner thighs may also be involved. The most common symptoms in women are pain with urination and pain with intercourse.
The initial ulcer may be mistaken as a chancre, the typical sore of primary syphilis.
Approximately half of the infected individuals will develop enlargements of the inguinal lymph nodes, the nodes located in the fold between the leg and the lower abdomen.
Half of those who develop swelling of the inguinal lymph nodes will progress to a point where the nodes rupture through the skin producing draining abscesses. The swollen lymph nodes and abscesses are often referred to as buboes.
External links
- http://www.emedicine.com/EMERG/topic95.htm
- http://www.nlm.nih.gov/medlineplus/ency/article/000635.htm
Referenced By
List of sexology topics | STDs | Sexual disease | Sexually transmitted disease | Veneral Disease | Venereal disease | Verneral Diseases | Verneral disease
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