U.S. doctors online nowAsk doctors free
A 45-year-old member asked:

how do i differentiate between syphillis chancre and chancroid?

1 doctor answer3 doctors weighed in
Dr. Martin Raff
Infectious Disease 56 years experience
Many differences: The syphilitic ulcer has a hard base which is non-tender, has a well-defined edge and will, with time, disappear on its own. The chancroid ulcer has a soft base, is quite tender and may look inflamed, and has ragged shaggy edges. You should not try to make this diagnosis yourself, but see a doctor, because if you have one std the odds are good that you have more than one. Get tested.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month

Similar questions

A 30-year-old member asked:

How to tell the difference between chancroid and syphilis?

1 doctor answer3 doctors weighed in
Dr. RADHA SYED
Gynecology 52 years experience
Genital lesions: Chancroid is a soft friable lesion appearing on mons pubis with surface ulceration.Syphillitic ulcers are more defined, smaller , deeper ulcerated areas which are usually painless(unlike herpetic ulcers). The definitive test is taking swab cultures or biopsies.A blood sample for syphilis(rpr with fta) must be done additionally to confirm before treatment could be started.
A 46-year-old member asked:

How do I differentiate between syphilis and chancroid?

2 doctor answers3 doctors weighed in
Dr. Henry Selke
Infectious Disease 16 years experience
Genital ulcers: Herpes, syphilis, donovanosis and chancroid cause genital ulcers. In the us, genital herpes is the most common. A diagnosis of chancroid is a little tricky b/c test not widely available. Having both a painful genital ulcer and tender swelling in the groin raises the possibility of chancroid (in setting of negative syphilis and herpes testing). Hiv test should also be done. See md for evaluation.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month
Last updated Sep 28, 2016
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits
$15 per month

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.