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Living with Chancroid

A bacterial infection spread by sexual contact that causes painful genital sores.

Understanding Chancroid

Chancroid is a bacterial infection spread through sexual contact and caused by Haemophilus ducreyi bacteria.

It starts as a small bump on the genitals that becomes a painful ulcer. Men may have just one ulcer, while women often have four or more. About half of people develop enlarged lymph nodes in the groin fold, and sometimes these break through the skin and drain.

Signs & symptoms

GARD doesn't list a separate symptom list for this condition. Its summary describes these features:

  • A small bump on the genitals
  • A painful genital ulcer
  • Several ulcers (often in women)
  • Swollen lymph nodes in the groin
  • Draining abscesses from swollen nodes

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which tests can confirm chancroid?
What antibiotic treatment is right for me?
Should my partner(s) be tested or treated?

Quick facts

Chancroid is caused by Haemophilus ducreyi bacteria. It is spread through sexual contact.

Also known as: chancroidal bubo; ducrey's chancre; soft chancre - chancroid; soft sore - chancroid; ulcus molle, skin

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · ChancroidGARD ID 9522 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Chancroid.

Explore the Chancroid blog

Explore research for Chancroid

Explore actively recruiting Chancroid studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Chancroid with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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