chancroid
Sign in to saveAlso known as soft chancre, ulcus molle, (Chancroid [& bubo]) or (Ducrey's chancre), Ulcus molle, skin, Chancroids
Chancroid ( ) is a bacterial sexually transmitted infection characterized by painful sores on the genitalia. Chancroid is a bacterial infection caused by the fastidious Gram-negative streptobacillus Haemophilus ducreyi. Chancroid is known to spread from one individual to another solely through sexual contact. However, there have been reports of accidental infection through the hand.
Key facts
- Medical condition (new).name
- Chancroid
- Medical condition (new).image
- Haemophilus_ducreyi_01.jpg
- Medical condition (new).caption
- Chancroid stained with gentian violet
- Medical condition (new).synonyms
- Soft chancre and Ulcus molle
via Wikipedia infobox
Research
1,335 papers- Chancroid.Clinics in dermatology · 2026
- Chancroid.Sexually transmitted infections · 2006
- Chancroid.BMJ (Clinical research ed.) · 1989
- Chancroid.Current problems in dermatology · 1996
- Chancroid: contemporary appraisal.International journal of dermatology · 2003
via PubMed
Wikidata facts
- Image
- Haemophilus ducreyi 01.jpg
Show 5 more facts
- exact match
- identifiers.org/doid/DOID:13778
- ICD-9-CM
- 099.0
- Commons category
- Chancroid
- minimal incubation period in humans
- 4
- maximal incubation period in humans
- 7
via Wikidata · CC0
~7 min read
Article
21 sectionsContents
- Signs and symptoms
- Complications
- Sites for chancroid lesions
- Males
- Females
- Causes
- Pathogenesis
- Diagnosis
- Variants
- Laboratory findings
- Differential diagnosis
- Comparison with syphilis
- Prevention
- Treatment
- Antibiotics
- Prognosis
- Follow-up
- Epidemiology
- History
- References
- External links
Chancroid ( ) is a bacterial sexually transmitted infection characterized by painful sores on the genitalia. Chancroid is a bacterial infection caused by the fastidious Gram-negative streptobacillus Haemophilus ducreyi. Chancroid is known to spread from one individual to another solely through sexual contact. However, there have been reports of accidental infection through the hand.
==Signs and symptoms== thumb|Buboes in a male These are only local and no systemic manifestations are present. The ulcer characteristically: Ranges in size dramatically from 3 to 50 mm (1/8 inch to 2 inches) across Is painful Has sharply defined, undermined borders Has irregular or ragged borders, described as saucer-shaped. Has a base that is covered with a gray or yellowish-gray material Has a base that bleeds easily if traumatized or scraped Painful swollen lymph nodes occur in 30–60% of patients. Dysuria (pain with urination) and dyspareunia (pain with intercourse) in females