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Primary Lesions
| Question | Answer |
|---|---|
| flat, nonpalpable change in skin color with different sizes, shapes, color; usually smaller than 1 cm | macule |
| rubella, scarlet fever, freckles | macule |
| palpable solid raised lesion that is less than 1 cm in diameter due to superficial thickening in the epidermis | papule |
| ringworm, wart, mole | papule |
| solid elevated lesion that is larger and deeper than a papule | nodule |
| fibroma, intradermal nervi | nodule |
| small, blisterlike raised area of the skin that contains serous fluid, up to 1 cm in diameter | vesicle |
| poison ivy, chickenpox, shingles | vesicle |
| fluid-filled vesicle or blister larger than 1 cm | bulla |
| small elevation of skin or vesicle or bulla that contains lymph or pus | pustule |
| impetigo, scabies, acne | pustule |
| round, transient elevation of the skin caused by dermal edema and surrounding capillary dilation; white center, red periphery | wheal |
| hives, insect bites | wheal |
| path or solid, raised lesion on the skin or mucous membrane that is greater than 1 cm in diameter | plaque |
| closed sac or pouch which consists of semisolid, solid, or liquid material | cyst |
| sebaceous cyst | cyst |