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Skin Lesions 1
Primary & Secondary Lesions
| Question | Answer |
|---|---|
| Flat, unelevated change in color. 1mm-1cm in size and circumscribed. | Macule |
| Flat, unelevated change in color. Larger than 1cm and may have an irregular shape. | Patch |
| Circumscribed, solid elevation of the skin. Less than 1cm. | Papule |
| Larger than 1cm. Ex Psoriasis, Rubeola | Plaque |
| Elevated, solid, hard mass that extends deeper into the dermis than a papule. It has a circumscribed border and are 0.5-2cm. | Nodule |
| Elevated, solid, hard mass that extends deeper into the dermis than a papule and is larger than 2cm. May have an irregular border. | Tumor |
| A circumscribed, round or oval, thin translucent mass filled with serous fluid or blood. Less than 0.5cm | Vesicle |
| A circumscribed, round or oval, thin translucent mass filled with serous fluid or blood. Larger than 0.5cm | Bulla |
| Vesicle or Bulla filled with pus. | Pustule |
| A 1cm or larger, elevated, encapsulated, fluid-filled or semisolid mass arising from the subcutaneous tissue or dermis. | Cyst |
| A reddened localized collection of edema fluid: irregular in shape. Ex. would be an allergic reaction. | Wheal |
| Dry blood, serum, or pus left on the skin surface when vesicles or pustles burst. Can be red-brown, orange, or yellow. | Crust |
| Linear crack with sharp edges, extending into the dermis. | Fissure |
| Flat, irregular area connective tissue left after a lesion or wound has healed. | Scar |
| Elevated, irregular, darkened area of excess scar tissue caused by excessive collagen formation during healing. | Keloid |
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