Dermatology Power point slides Useful, Important & Easy Way To Understand The Chapter

1. CHANCROID

2. Chancroid :
 It is an acute STD characterized by a
painful ulcer at the site of inoculation
and development of suppurative
regional lymphadenopathy.
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3. Chancroid :
 Etiology : Hemophilus ducreyi , a gram –ve
streptobacillus.
 High incidence of HIV infection in patients
with chancroid . Known to enhance infection
rate.
 Incubation period : 4 to 7 days.
 Endemic in tropical 3rd world countries.
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4. Skin lesion
 Initially tender papule that
evolves to pustule,
erosion and ulcer.
 Ulcer is quite tender and
painful.
 Borders are sharp
undermined and not
indurated.
 Base of ulcer covered
with gray to yellow
exudate.
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7. Skin lesions :
 Ulcers may be single or multiple or merge to
form large ulcers.
 Suppurative Lymphadenopathy ,painful,
(usually unilateral) occur within 1 to 2 weeks
of the lesion.
 Buboes may drain spontaneously.
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8. Investigations :
 Gram stain: Scrapings from base of ulcer may
show clusters of gram negative rods
(SCHOOL OF FISH).
 Culture : Difficult, special media, Sensitivity
< 80%.
 Serologic tests : None, Should be tested for
syphilis and HIV. Repeat after 3 months if –
ve initially.
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9. Management :
 Azithromycin : 1 gm Single dose.
 Inj. Ceftriaxone : 250 mg IM single dose.
 Ciprofloxacin : 500mg bid for 3 days.
 Reexamination after 3 to 7 days.
 Buboes may need to be aspirated.
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10. Complications :
 Large inguinal abscess may develop & rupture to form
draining sinus or giant ulcer
 Superinfection by Fusarium & Bacteroides
 Phimosis- in long standing lesions

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