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Old 05-31-2013
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Bacteria Confusing the STDs!

How to differentiate STDs ?
(chancre, chancroid, granuloma inguinale, lymphogranuloma venereum)

Can somebody help plz :sorry:
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Old 05-31-2013
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This should get you started: a very simple and dirty way to form differential diagnosis without going into too much details. It's not complete by any mean and it's pretty generalize so there are always be exceptions. So obtain more details into the mechanism of each disease as well as morphology to complete your understanding. Hope it helps,

Haemophilus ducreyi (painful chancroid): painful chancroid with unilateral painful swollen lymph node that contain pus, often become matted and rupture
Herpes (HSV-1,2): vesicular appearance (unique blister like lesions). This can be misdiagnosed as chancroid after they ruptured, but Herpes often has systemic symptoms (myalgia, fever) while chancroid often do not.
Chlamydia Trachomatis (lymphogranuloma venereum): painless matted pus containing inguinal lymph node that develop more slowly than chancroid. Another way to distinguish it from chancroid is that the lymph node enlargement appear after the skin lesion disappear while skin lesion and enlarged lymph node appear together in chancroid
Treponema pallidum (syphilis): painless ulcer, bilateral non pus lymph node.
Granuloma inguinale: painless ulcer that look like syphilis, but inguinal lymph enlargement is often absence in this disease (present in syphilis)

Last edited by brad89300; 05-31-2013 at 07:24 AM. Reason: formatting
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Old 05-31-2013
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Thank u very much brad89300,it really helped.

Maybe i can add -and plz correct me if i'm wrong- that in

-Syphilis:solitary skin ulcer
-Chancroid:solitary skin ulcer
-Granuloma inguinale:multiple ulcers
-LGV:solitary skin lesion
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