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Related to chancroid: granuloma inguinale, syphilis


see sexually transmitted diseasesexually transmitted disease
(STD) or venereal disease,
term for infections acquired mainly through sexual contact. Five diseases were traditionally known as venereal diseases: gonorrhea, syphilis, and the less common granuloma inguinale, lymphogranuloma venereum, and
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(soft chancre; also called venereal ulcer in Russian), an infectious disease in man, caused by the streptobacillus Hemophilus ducreyi, or Ducrey’s bacillus (described in the late 1880’s and early 1890’s by the Russian O. V. Petersen, the Italian A. Ducrey, and the German P. Unna) and transmitted mainly through sexual intercourse.

The causative agent of chancroid is found in the discharge from the chancre; under a microscope it looks like a short rod with rounded ends and a slender middle. Two to five days after infection, a pustule forms over a bright red edematous spot at the site of entry of the infection; the pustule opens three or four days later and becomes a small painful ulcer with ragged edges, undermined by a purulent deposit and with a soft base encircled by a red edematous rim. The purulent discharge from such ulcers reaches the surrounding tissues and gives rise to numerous new ulcerations, which become scarred after a month or two. When the streptobacilli penetrate the regional lymphatic nodes, the latter become enlarged (bubo formation); they coalesce and fuse with the skin, soften, and open to form ulcers. The process is accompanied by local pain, high temperature, and general malaise.

Treatment includes the use of antibacterial agents and immersion of the affected area in a warm manganese bath. (SeeVENEREAL DISEASES for a description of preventive measures.)


Mnogotomnoe rukovodstvo po dermato-venerologii, vol. 1. Moscow, 1959. Pages 448–57.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


A lesion of the genitalia, usually of venereal origin, caused by Hemophilus ducreyi. Also known as soft chancre.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The other STU that was painful was chancroid. Similarly, pain as a presenting feature was noted in scabies-related ulcer and FDE, too.
Chancroid, syphilis and LGV were considered by a differential diagnosis.
The global epidemiology of chancroid is poorly documented, and it is not included in World Health Organization estimates of the global incidence of curable sexually transmitted infections (STIs).
Chapter 202: Chancroid. In: Goldsmith LA, Katz SI, Gilchrest BA, Paller AS, Leffell DJ, Wolff K.
In our study we observed that most common STI in males was balanoposthitis (candidial) followed by genital herpes and the least common was chancroid. In females, commonest was Vaginal/cervical discharge (candidial) followed by genital herpes and the least common being Lymphogranuloma venereum (LGV) (Table 1).
For herpes progenitalis ulcer smear and IgM HSV-2 ELISA; for donovanosis tissue smears; and for chancroid smear and culture using two medium i.e., GC agar base with iso-vitalex, vancomycin and fetal calf serum and Mueller Hinton agar with isovitalex, vancomycin and fetal calf serum from ulcer base were performed.
Chancroid is an uncommon sexually transmitted disease in which a painful genital ulceration occurs with suppurative lymphadenopathy.
This might involve screening for the major reportable ones--gonorrhea, syphilis, chlamydia, chancroid, and HIV--along with hepatitis B and C and herpes simplex.
Chancroid is a sexually transmitted infection caused by the Gram negative bacterium Haemophilus ducreyi.
The most common mixed infections involved syphilis, chancroid and genital herpes.
Chancre was present in 24.4% of the patients followed by chancroid in 8.2% of patients.