Skin investigations Flashcards

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1
Q

What are the investigations for bacterial skin infections?

A

Take swabs from affected area, serous fluid, for bacteriology then:

Microscopy, culture and sensitivity

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2
Q

What are the investigations to be done for viral skin infections ?

A

Take swabs of vesicular fluid for virology then:

PCR

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3
Q

What are the investigations done for fungal skin infections ?

A

Take scrapings from edge of affected area for mycology:

Microscopy and culture for fungi

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4
Q

Appreciate this

A

For skin biopsy’s:

Ellipse – larger specimen

  • incisional for diagnosis of larger lesion / rash
  • excisional to remove a discrete lesion
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5
Q

What are the two main investigations you can do for Type I hypersensitivity reactions ?

A

IgE blood test

Skin prick test (think this is first choice) - there is a risk fo anaphylaxis though

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6
Q

What is the first choice investigation for type IV hypersensitivity reaction ?

A

Patch testing

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