Primary vs. Secondary Lesions

What distinguishes a primary skin lesion from a secondary skin lesion?

Primary skin lesions develop on previously unaltered skin, while secondary lesions develop with time and may be caused by injury or infection (p.229-231).

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papule (pic on other side)

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macule (pic on other side)

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patch (pic on other side)

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plaque (pic on other side)

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nodule (pic on other side)

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tumor (pic on other side)

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wheal (pic on other side)

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urticaria (or hives) (pic on other side)

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vesicle (pic on other side)

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bulla (pic on other side)

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pustule (pic on other side)

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scale (pic on other side)

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erosion (pic on other side)

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excoriation (pic on other side)

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atrophic scar (pic on other side)

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keloid (pic on other side)

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cyst (pic on other side)

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crust (pic on other side)

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fissure (pic on other side)

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ulcer (pic on other side)

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scar (pic on other side)

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lichenification (pic on other side)