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28 Cards in this Set
- Front
- Back
Describe (not diagnosis)
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Annular erythematous macules with trailing ring of scales
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Erythema histology
note: stretched vessels (not ruptured or leaking) |
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Prototypical urticaria (hives if <24 hrs)
note: orange peel appearance indicates fluid accumulation in dermis |
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Urticaria
note: presence of eosinophils - hazy around vessels with lots of infiltrate - lots of dermal edema (slightly more damage than with erythema) |
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Urticaria
note: orange peel pattern on erythematous areas |
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Angioedema (urticaria on chest)
note: severe swelling indicates mast cells have dumped their granules |
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also, most common areas
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Erythema multiform
note: targetoid appearance of vesicles favors palms, soles, extensor surfaces |
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Erythema multiform
note: targetoid appearance of purpura, non-blancing favors palms, soles, extensor surfaces |
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Erythema multiform with swelling
note: targetoid appearance of vesicles favors palms, soles, extensor surfaces |
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Erythema multiform
note: targetoid appearance of vesicles favors palms, soles, extensor surfaces |
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Erythema multiform
note: targetoid appearance of vesicles favors palms, soles, extensor surfaces |
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Erythema multiform or stevens johnson (if mucous membranes are involved)
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Stevens-Johnson syndrome
note: mucosal involvement not in EM |
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Stevens-Johnson syndrome
note: mucosal involvement not in EM |
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Stevens-Johnson syndrome
note: severe blistering (bullae and vesicles) |
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Toxic epidermal nicrolysis - when EM/SJS involves more than 30% of the body
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also, where is the inflammation
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Erythema nodulosum
note: "kicked in the shins" appearance (raised, erythematous, painful nodules) usually on the anterior surface of the lower leg Nodular swelling indicates subcutaneous involvement (inflammation of the subQ fat) |
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Solar purpura
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Solar purpura with damage to collagen and elastic fibers
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Scarring from discoid lupus
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discoid lupus characteristic butterfly rash = maculopapular eruptions over malar eminences and bridge of nose
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Purpura - non-inflammatory type
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Palpable purpura is hallmark of inflammatory (leaky) purpura
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large, palpable spot of purpura = immune complex has "blown away" vessels
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Inflammatory Purpura
note: fibrinoid necrosis, karyorhexis (when nucleus of neutrophils explode) |
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inflammatory purpura
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Inflammatory purpura of large vessel
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Deep artery purpura in polyarteritis nodosa
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