00:01 Now, let's shift to Haemophilus Ducreyi which is much less common thankfully. 00:06 It is a cause of the sexually-transmitted infection known as chancroid. 00:10 Chancroid is symptomatic in males and as you can see from the projected image, you could imagine why that would be. 00:18 Chancroid, when it occurs, in females, is quite asymptomatic. 00:22 The pathogenesis of Haemophilus ducreyi has to do with Pili which will attach to underlying genital and perianal mucosa. 00:31 Clinical manifestations, Haemophilus Ducreyi and chancroid is a cause of one of the painful ulcers of the genitals. 00:40 Unlike some other causes which we'll talk about in other parts of these series which cause painless ulcers of the genitals, chancroid is painful. 00:49 In five to seven days after exposure to the organism and starting to develop those painful ulcers on the genitalia, then a local or regionalized lymph reaction via inguinal lymphadenopathy will develop. 01:05 Because this is a rapid onset of swollen lymph nodes, those lymph nodes will be tender. 01:12 They're stretching the capsule of the lymph node in which are residing the pain fibers. 01:17 Diagnosis largely is a diagnosis of exclusion. 01:21 Primary syphilis and herpes simplex are very common causes although more often than not, may cause painless lesions. 01:30 If one can exclude those clinically, then treatment for chancroid with Haemophilus ducreyi is accomplished with ceftriaxone and azithromycin. 01:40 So we have two different manifestations of two different types of Haemophilus. 01:46 One, very common, one, thankfully somewhat unusual. 01:50 The Haemophilus influenzae, however, as the common cause of many sinopulmonary infections is absolutely something to be aware of and to think about when making typical diagnosis. 02:02 Here ends the story on Haemophilus.
The lecture Haemophilus Ducreyi by Sean Elliott, MD is from the course Bacteria.
Which type of sexually transmitted disease is caused by Haemophilus ducreyi?
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So useful, and yes the sound is on! It would be nice if you went deeper into the diagnosis
no sound on the video. no sound on the video.