Chancroid
How is the infection diagnosed?
Diagnosis of chancroid begins with a medical history and physical
exam. The Centers for Disease Control (CDC) gives three criteria for a
diagnosis of chancroid.
The person has one or more painful ulcers, which may be associated with
swollen lymph nodes.
Syphilis has been ruled
out with diagnostic tests.
The person's symptoms are not typical of genital herpes, or a culture for the herpes virus is
negative.The Haemophilus ducreyi
bacteria that cause chancroid can only be grown on a special culture medium.
That medium is not always available, and the test is only 80% sensitive for the
bacteria.
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