Chapters 1, 2, 3, 4, 8, 9, 10, 11, 12, 13 Flashcards
(305 cards)
Annular Lesions
Description: circular, begins in center & spreads to periphery
Ex. Ringworm
Confluent Lesions
Description: lesions run together
Ex. Urticaria (hives)
Discrete Lesions
Description: distinct, individual lesions that remain separate
Ex. Skin tags, acne
Gyrate Lesions
Description: twisted, coiled, spiral, snakelike
Linear Lesions
Description: a scratch, a streak, line or stripe
Zosteriform Lesions
Description: linear arrangement along unilateral nerve route
Ex. Herpes Zoster
Grouped Lesions
Description: clusters of lesions
Ex/ Vesicles of contact dermatitis
Target Lesions
Description: resembles iris of eye, concentric rings of color in lesions
Ex. Erythema Multiforme
Polycyclic Lesions
Description: annular lesions grow together
Ex. psoriasis, lichen planus
Macule Lesion
Description: soley a color change, flat & circumscribed of less that 1 cm.
Ex. Freckles, petechiae, measles, scarlet fever
Papule Lesion
Description: solid elevated, circumscribed less than 1 cm.
Ex. Mole or Wart
Patch Lesion
Description: Macules that are larger than 1 cm.
Ex. mongolian spot, cafe au lait spots, measles rash
Nodule Lesions
Description: solid elevated, hard or soft, larger than 1 cm.
Ex. xanthoma, fibroma
Wheal Lesion
Description: superficial raised, transient & erythematous, slightly irregular shape from edema
Ex. Mosquito bite, allergic reaction
Urticaria Lesion (Hives)
Description: wheals coalesce to form extensive reaction, intensely pruritic
Vesicle Lesion
Description: elevated cavity containing free fluid, up to 1 cm. “blister”
Ex. Herpes simplex, early varcellia, herpes zoster
Bulla Lesion
Description: Larger than 1 cm. usually single chambered superficial to epidermis; thin walled & ruptures easily
Ex. Friction blister, burns
Cyst Lesion
Description: Encapsulated fluid-filled cavity in dermis or subcutaneous layer, tensely elevated
Ex. sebaceous cyst, wen
Pustule Lesion
Description: turbid fluid (pus) in the cavity. Circumscribed and elevated
Ex. Impentigo, acne
Crust Lesion
Description: The thickened, dried out exudate left when pustules burst or dry up
Ex. Impetigo (dry-honey color), scab
Scale Lesion
Description: Compact desiccated flakes of skin dryor greasy, silvery or white from shedding of dead excess keratin cells
Ex. Eczema, psoriasis, ichthyosis, seborrheic dermatitis
Fissure Lesion
Description: linear crack with abrupt edges, extends into dermis
Ex. Cheilosis (corners of mouth), athlete’s foot
Erosion Lesion
Description: Scooped out but shallow depression. Superficial; epidermis lost; no bleeding (b/c does not extend to dermis)
Ulcer Lesion
Description: Deeper depression extending into dermis, irregular shape; may bleed
Ex. Stasis ulcer, pressure injury