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-
Papule
- Small pimple/swelling
- Rash
- Circumscribed
- <5mm
-
Nodule
- Large papule
- Rounded lump that is different to surroundings
- >5mm
- Bigger than a papule
-
Plaque
- Broad papule
- >1cm
- Greater in diameter than depth
-
Vesicle
- Circumscribed
- Fluid-containing
- <5mm
-
Bulla
- Large vesicle
- Rounded or irregularly shaped blister
- Contains serous or seropurulent fluid
- > 5mm
-
Pustule
- Small elevation of the skin
- Containing cloudy or purulent material
- Necrotic inflammatory cells
- Either white or red.
-
Erosion
- Discontinuity of the skin exhibiting incomplete loss of the epidermis
- Lesion is moist, circumscribed
- Usually depressed
-
Lichenification
- Epidermal thickening
- Visible and palpable thickening of the skin
- Accentuated skin markings
-
Ulcer
- Discontinuity of the skin
- Complete loss of the epidermis
- (and often portions of the dermis and even subcutaneous fat)
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