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Summary Describing Skin Lesions
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Describing Skin Lesions Correct vocabulary to ace your derm OSCES
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SKIN TERMINOLOGYLesion – single area of abnormality
Solitary
Multiple
Rash – widespread eruption of lesions
The lesion or rash is described based on its:
Colour
Red Light Dark Blood
Erythematous (red) Hypopigmented Hyperpigmented Purpura – may be palpable
Pink (lighter red) (tanned/dark) (vasculitis)
Necrotic (dead/black) Petechiae (<2mm blood
dots)
Ecchymoses (bruises)
Telangiectasia (blood
vessels)
Configuration
, Morphology
Concepts
Flat vs Raised
Hard vs Soft
Mobile vs Immobile
Symmetrical vs Unilateral
Terminology
Macule – flat, small area of colour altered
lesion
Patch – flat, large area of colour altered skin
Plaque – raised/thickened, large area
(>1cm)
Weal – raised/oedematous, large area
Papule – raised, hard, <1cm palpable lesion
Nodule – raised, hard, >1cm palpable lesion
Vesicle – raised, soft, fluid filled, <1cm
Bulla – raised, soft, fluid filled, >1cm
Cyst – raised, firm, but fluctuant, fluid filled
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