Show Summary Details
Page of

Haemophilus ducreyi and chancroid 

Haemophilus ducreyi and chancroid
Haemophilus ducreyi and chancroid

Nigel O’Farrell


February 27, 2014: This chapter has been re-evaluated and remains up-to-date. No changes have been necessary.


Histological and immunophenotypic features of chancroid.

Interaction between HIV infection and chancroid.

Page of

PRINTED FROM OXFORD MEDICINE ONLINE ( © Oxford University Press, 2021. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a title in Oxford Medicine Online for personal use (for details see Privacy Policy and Legal Notice).

date: 27 September 2021

Haemophilus ducreyi is a Gram-negative, facultative anaerobic bacillus that is the cause of chancroid, which is endemic in sub-Saharan Africa and the Caribbean, although the overall global incidence of the condition has decreased dramatically since the mid 1990s.

Clinical features—After an incubation period of 4 to 10 days, presentation is with a tender genital papule that develops into a pustule and then an ulcer with a ragged undermined edge and a yellow base that bleeds readily. The usual sites of infection in men are the prepuce and coronal sulcus, and in women the labia minora and fourchette. Inguinal lymphadenopathy is found in about half the male cases. Chancroid is an important risk factor for the transmission of HIV infection. HIV infection may result in atypical manifestations if chancroid....

Access to the complete content on Oxford Medicine Online requires a subscription or purchase. Public users are able to search the site and view the abstracts for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can't find the answer there, please contact us.