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Macule
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Solely a color changeflat, circumscribed<1cm
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Examples of macules
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Frecklesflat nevihypopigmentationpetechiaemeaslesscarlet fever
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Patch
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Macules >1cm
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Examples of patches
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Mongolian spotvitiligocafe au lait spotchloasmameasles rash
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Nodule
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>1cmsolid, elevated, hard or softmay extend into dermis deeper than papule
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Nodule examples
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Xanthomafibromaintradermal nevi
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Tumor
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> a few cm in diameterfirm or soft, deeper into dermisbenign or malignant
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Tumor examples
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Lipomahemangioma
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Papule
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,1cm diametersmthg you can feel i.e., solid, elevated, circumscribed,
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Papules caused by
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Superficial thickening in the epidermis
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Papule examples
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Elevated nevus (mole)lichen planusmolluscumwart (verruca)
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Plaque
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Papules coalesce to form sfc elevation wider than 1cmplateau-like, disk shaped lesion
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Plaque examples
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Psoriasislichen planus
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Wheal
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Superficial, raised, transient, erythematous, slightly irreg shape due to edema
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Wheal examples
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Mosquito bitesallergic rxndermographism
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