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  #1  
Old 08-24-2012
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Post easiest question in microbiology....

q) a 25 yr old male came to the physician complaining of pruritic rash with papules all over the body exclusively on flexors from 5 days without any fever or diarrhea....he is a chronic alcoholic and smoker too....on physical examination, the physician after several lab tests came to know that the pt. is not suffering with any internal organ involvement and the blood tests were pretty normal....so, the physician informs the patient that he is id reaction postitve and prescribe empirical antimicrobial agents...what is your suspective organism for the rash..?

a) pityrosporum orbiculare
b) microsporum canis
c) propionibacterium bifidis
d) borrelia burgdorferi
e) madurella mycetis
f) dracunculus medinensis
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  #2  
Old 08-24-2012
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Default my answer

a) pityrosporum orbiculare

id reactions indicative for dermatophytids -> Malassezia/pityrosporum
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Old 08-25-2012
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Plz change the title. No question in microbiology is easy. ;-)
Even if someone will ask me tell the full spelling of E. Coli. I would be standing there with mouth wide open. Hhehehe
Anyways, really want to know the answer
So giving my answer-
D borrelia burgdorferi- doctor gave antibiotic and most of options are fungus or worms except D and C.
I don't know what p. bifidis actually do but I know one of propionibacterium is used to make CHEESE. ;-)


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Old 08-25-2012
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Quote:
Originally Posted by koolkiller88 View Post
Plz change the title. No question in microbiology is easy. ;-)
Even if someone will ask me tell the full spelling of E. Coli. I would be standing there with mouth wide open. Hhehehe
Anyways, really want to know the answer
So giving my answer-
D borrelia burgdorferi- doctor gave antibiotic and most of options are fungus or worms except D and C.
I don't know what p. bifidis actually do but I know one of propionibacterium is used to make CHEESE. ;-)


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yeah tittle needs to be changed .... no q in micro is easy

hey borrelia apart from rash , affects heart , joints , and cns also .. causing myocarditis arthritis facial nerve palsy etc... !

And you are not lucky enough to eliminate all except C and d coz dr gave antimicrobial not antiacterial !!! haha they never make it soo easy for us ..

i think ans is a
..
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Old 08-25-2012
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Post the correct answer is b) microsporum

the right answer is microsporum

@casandra...you diagnosed it correct but u choosed the wrong answer

sorry guys...i thought it was easiest question ,so i posted likewise...

as for the question the pt. suffered from pruritic rash......propionibacterium,madurella can be excluded

id reaction is the clue------seen by antigenic response in our body to dermatophytes( as given in kaplan text)
dermatophytes are group of 3 fungal genera------trichophyton,epidermophyton and microsporum....causes epidermal skin infections only.....all diseases caused by them are named after tinea---all tinea infections(except tinea versicolor)

as for the other options-----1.pityrosporum ovale/orbiculare aka malasezzia furfur belongs to basidiomycetes causes tinea versicolor-----hypo/hyperpigmented macules mostly all over the body

3. propionibacterium bifidis/acnes-----is a weakly gram stained bacteria....causes acne vulgaris....charectarised by papules,pustules,nodules...treatment is isotretinoin/ doxycycline

4.borrelia burgdorferi-----spirochete causing lyme disease-----erythema migrans( annular lesions..most common on trunk),bull's eye lesions are charectaristic

5. madurella mycetis( sorry guys it's mycetomatis)------a fungi causes eumycetoma(madura foot)-----some bacteria also causes madura foot( like actinomyces and nocardia),,,diagnosed by presence of granules in the lesions...mc site is dorsum of foot

6. dracunculus medinensis----aka guniea worm/fiery serpent---is a nematode causes rash but with intense eosinophilia, ulcers are formed at the site of eruptions only...treatment is metronidazole...
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The above post was thanked by:
Casandra (08-26-2012), hypermedic (08-26-2012), koolkiller88 (08-26-2012), nooranimm (10-28-2012), nsesereso (09-06-2014)



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