Wk 3 Acute Inflammatory Dermatosis Flashcards Preview

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Flashcards in Wk 3 Acute Inflammatory Dermatosis Deck (20)
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1
Q

Urticaria:

  • presentation
  • pathophys
  • common name
A
  • erythemitis pruritic wheal lesions
  • IgE/histamine mediated (type I hypersensitivity)
  • hives
2
Q

Angioedema:

  • presentation
  • pathophys
  • common name
A
  • deep dermal/sub-Q burning, painful swelling
  • IgE/histamine mediated (type I hypersensitivity)
  • emergent allergic rxn
3
Q

Two classes of urticaria causes

A
  • immune

- nonimmune

4
Q

Examples of immune urticaria

A

drug rxn: penicillin, sulfonamides, insect bites, etc.

food rxn: peanuts, shellfish, eggs, milk, soy, etc.

viral rxn: Hep A, B, C, Epstein-Barr, HIV, etc.

5
Q

Examples of non-immune uritcaria

A

physical: sun, sweating, vibrations, etc.

direct mast cell degranulation: NSAIDs, dextran, vanco, etc.

6
Q

First choice drug for chronic urticaria

A

antihistamines (cetirizine, Zyrtec)

7
Q

Erythema multiforme:

  • presentation
  • pathophys
A
  • erythemic target-shaped lesions on extremities, does not itch
  • immune, viral, idiopathic
8
Q

Viral causes of erythema multiforme

A

herpes simplex

9
Q

Erythema multiforme can progress to what disease?

A

Stevens-Johnson syndrome

10
Q

Stevens-Johnson syndrome

A

extreme erythema multiforme

11
Q

Toxic epidermal necrolysis

A

extreme Stevens-Johnson syndrome

12
Q

Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis most likely cause

A

Rx

13
Q

Fixed drug eruption

  • presentation
  • pathophys
A
  • sharply demarcated erythematous patch that may itch, burn, or be asymptomatic
  • possibly immune
14
Q

Panniculitis

  • presentation
  • pathophys
A
  • erythematous patches in sub-Q

- meds, infection, autoimmune

15
Q

Common Rx cause of panniculitis

A

oral contraceptives

16
Q

Panniculitis erythema nodosum location

A

anterior shin

17
Q

Panniculitis erythema induratum

A

posterior shin

18
Q

Panniculitis erythema induratum population

A

middle-aged women

19
Q

Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis population

A

> 40 y/o

20
Q

Erythema Multiforme population

A

males < 20 y/o