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N312 Lecture > Skin Lesions > Flashcards

Skin Lesions Flashcards

1
Q

Annular

A

circular, begins in the center and spreads to periphery

Ex: Ringworm (tinea corporis)

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2
Q

Confluent

A

lesions that run together

Ex: Hives (urticaria)

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3
Q

Discrete

A

Distinct individual lesions that remain separate

Ex: Skin tag, Acne

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4
Q

Gyrate

A

Twisted, coiled, spiraled, snake-like

Ex: Rheumatic Fever

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5
Q

Grouped

A

Cluster of lesions

Ex: Contact Dermatitis, Vesicles

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6
Q

Linear

A

Scratch, streak, line, or stripe

Ex: Scratch lol

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7
Q

Target

A

aka Iris
Resembles iris of the eye and has concentric rings of color in the lesions
Ex: Spider bite

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8
Q

Zosteriform

A

A linear arrangement along a unilateral nerve route

Ex: Herpes Zoster

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9
Q

Polycyclic

A

Annular lesions that grow together

Ex: Psoriasis

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10
Q

Macule

A

Color change but stays flat and circumcised, less than 1 cm

Ex: Freckle, Hypopigmentation, Measles, Flat nevi, petechiae, scarlet fever

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11
Q

Patch

A

Macule larger than 1 cm

Ex: Mongolian spot, vitiligo, cafe au lait spot, chloasma, measles

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12
Q

Nodule

A

solid, elevated, hard or soft, larger than 1 cm. may extend deeper into dermis than papule.
Ex: xanthoma, fibroma, intradermal nevi

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13
Q

Tumor

A

Larger than a few centimeters in diameter, firm or soft, deeper into dermis; may be benign or malignant.
Ex: lipoma, hemangioma

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14
Q

Papule

A

Solid, elevated, circumscribed, less than 1 cm in diameter. Caused by superficial thickening in epidermis.
Ex: elevated nevus (mole), lichen planus, molluscum, wart (verruca)

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15
Q

Plauque

A

papules coalesce to form surface elevation wider than 1cm. plateaulike, disk shaped
Ex: psoriasis, lichen planus

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16
Q

Wheal

A

superficial, raised, transient, erythematous; slightly irregular shape from edema (fluid held diffusely in the tissues)
Ex: mosquito bite, allergic reaction, dermographism

17
Q

Vesicle

A

Elevated cavity containing free liquid up to 1cm; a “blister”. Clear serum flows if wall is ruptured.
Ex: Herpes Simplex, early varicella (ckn pox), herpes zoster (shingles), contact dermatitis

18
Q

Bulla

A

Larger than 1cm; usually chambered (unilocular); superficial in epidermis; thin walled and ruptures easily
Ex: friction blister, pemphigus, burns, contact dermatitis

19
Q

Cyst

A

encapsulated fluid-filled cavity in dermis or subcutaneous layer; tensely elevating skin
Ex: sebaceous cyst, wen

20
Q

Pustule

A 
Turbid fluid (pus) in cavity. Circumscribed and elevated
Ex: impetigo, acne
21
Q

Crust

A

thickened, dried out exudate left when vesicles/pustules burst or dry up. Color is red-brown, honey, or yellow depending on fluid ingredients (blood/serum/pus)
Ex: Impetigo, weeping eczematous dermatitis, scab after abrasion

22
Q

Scale

A

compact, desiccated flakes of skin, dry or greasy, silvery or white, from shedding of dead excess keratin cells.
Ex: dry skin, psoriasis, seborrheic dermatitis, eczema

23
Q

Fissure

A

linear crack with abrupt edges; extends into dermis, dry or moist
Ex: Cheilosis (at corners of mouth caused by excessive moisture), athlete’s foot

24
Q

Erosion

A

Scooped out but shallow depression. Superficial; epidermis lost; moist but no bleeding; heals without scar

25
Q

Ulcer

A

deeper depression extending into dermis, irregular shape; may bleed; leaves scar when heals
Ex: stasis ulcer, pressure injury, chancre

26
Q

Excoriation

A

Self-inflicted abrasion, superficial; sometimes from intense itching
Ex: Scabies, insect bites, varicella

27
Q

Scar

A

after skin repair, normal tissue is lost and replaced wiht collagen; a permanent fibrotic change
Ex: healed area of surgery or injury

28
Q

Atrophic scar

A

resulting skin level is depressed with loss of tissue; thinning of the epidermis
Ex: striae

29
Q

lichenification

A

prolonged, intense scratching eventually thickens skin and produces tightly packed sets of papules; looks like surface of moss (or lichen)

30
Q

Keloid

A

benign excess of scar tissue beyond sites of original injury (surgery, acne, ear piercing, tattoos, infections) Looks smooth, rubbery, shiny, “clawlike”; feels smooth and firm.

31
Q

urticaria

A

wheal unites

N312 Lecture (1 decks)

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