A painful sore on the genitals is easy to worry about and easy to misread. Chancroid is one possible cause, and it is uncommon in the United States, which is part of why it gets missed. This guide explains what chancroid is, the symptoms it causes, how it differs from syphilis and herpes, how testing works, and what treatment involves. You will also find clear steps for partners and prevention.
Key Takeaways
- Chancroid is a bacterial STD that causes painful, open genital sores
- It is uncommon in the US but more common in some other regions
- Sores usually appear 3 to 7 days after exposure
- A healthcare provider can prescribe antibiotics that cure the infection
- Testing for other STDs at the same time is often recommended
What Chancroid Actually Is
Chancroid is a sexually transmitted infection caused by the bacterium Haemophilus ducreyi. It shows up as one or more painful, open sores on the genitals. The bacterium enters through a small break in the skin that can happen during sex, which is why sores tend to appear where skin was rubbed or torn. Chancroid is uncommon in the United States. It is more common in parts of Africa, Asia, and the Caribbean. People who travel and have sex in those regions, or who have a partner from an area where it circulates, may have a higher chance of exposure. It is not the same as syphilis or genital herpes, even though all three cause genital ulcers. Syphilis sores are usually painless and firm. Herpes blisters tend to come in clusters. Chancroid sores are typically painful and soft, and they can bleed easily.
Chancroid Symptoms to Know
- One or more painful, open sores on the genitals or around the anus
- Sores that feel soft, have uneven edges, and may bleed when touched
- A yellowish or gray base visible under the sore
- Sores that grow larger or join together over several days
- Swollen, tender lymph nodes in the groin that may form a lump
- Pain or burning when you urinate or during sex
How Chancroid Compares to Other Genital Ulcers
| Condition | What the sore often looks like |
|---|---|
| Chancroid | Painful, soft sore with uneven edges that bleeds easily |
| Syphilis | Usually painless, firm, round sore with clean edges |
| Genital herpes | Small painful blisters that break open and crust over |
| Other causes | Sores from irritation, injury, or skin conditions |
How Chancroid Is Diagnosed
There is no reliable home test for chancroid. A healthcare provider usually starts with a physical exam and a conversation about your history and any recent travel. Because syphilis and herpes are far more common causes of genital ulcers in the United States, providers often test for those first. Ruling them out matters, since the treatments are different. Laboratory confirmation of chancroid can be done with a molecular test in some settings, but the bacterium is hard to grow in culture, so results are not always available. Many people with a genital ulcer are also offered testing for HIV and other STDs at the same visit. If you want to understand the general process, see how STD testing works and how long after exposure to test. Only a qualified healthcare provider can confirm a diagnosis and choose the right treatment for you.
Treatment and Healing
Chancroid is treatable. A healthcare provider can prescribe antibiotics that clear the infection. Take them exactly as directed and finish the full course, even if the sore looks better after a few days. Many people notice improvement within the first few days of treatment, and sores often heal over one to two weeks. Larger sores can take longer and may leave a scar. If a swollen lymph node in the groin becomes very painful, a provider may need to drain it. Avoid sex until your provider says the sores are fully healed, because they can spread the infection while open. Current and recent partners should be checked and treated too, even if they have no symptoms. If you are unsure where to start, treatment options and free testing options can help.
Prevention and When to Get Tested
Condoms lower the risk of chancroid and many other STDs, but they do not cover every patch of skin, so they reduce risk rather than remove it. Limiting the number of sexual partners and talking with partners about testing also helps. The key step is simple: any new, painful genital sore deserves a medical visit. Do not try to treat it with leftover antibiotics or home remedies. Sores that are not chancroid can look similar, and guessing delays the right care. Testing is available at clinics, health departments, and urgent care centers, and many options are low cost or free. If you are weighing what to do next, signs of an STD and do I have an STD walk through common questions. This information is educational and does not replace advice from a qualified healthcare provider.
Frequently Asked Questions
Is chancroid curable?
Yes. A healthcare provider can prescribe antibiotics that clear the infection, and the sores usually heal within one to two weeks. Large sores may take longer and can leave a scar.
How common is chancroid in the United States?
It is uncommon in the United States. Most cases worldwide are reported in parts of Africa, Asia, and the Caribbean, and US cases are often linked to travel or to a partner from those regions.
How long does chancroid take to show up?
Sores usually appear about 3 to 7 days after exposure, though sometimes up to 10 days later. If you notice a new genital sore, get it checked rather than waiting.
Can chancroid come back after treatment?
The infection does not stay hidden in your body the way a virus can, so successful treatment clears it. You can get it again if you are exposed again, which is why partner testing matters. See can an STD come back.