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Dermatology > Lesion Types, Shapes, and Patterns > Flashcards

Lesion Types, Shapes, and Patterns Flashcards

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Dermatology Board Prep flashcards
0
Q

Patch

A

Flat Lesion

Similar to a macule, but quite large, OR slightly raised plaque

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1
Q

Macule

A

Flat Lesion
Any change in skin color that is not palpable.
(not raised or depressed)

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2
Q

Papule

A

Raised Lesion
Elevated, superficial, and solid lesion
<0.5 cm

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3
Q

Plaque

A

Raised Lesion

A plateau-like elevation, usually well defined.

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4
Q

Nodule

A

Raised Lesion

Solid, larger and often starting at a deeper level than a papule.

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5
Q

Wheals

A

Raised Lesion

Pink papules or plaques that change or disappear within hours

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6
Q

Comedones

A

Raised Lesion

Dilated and plugged hair follicles

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7
Q

Horn

A

Raised Lesion

Conical Mass

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8
Q

Scar

A

Raised Lesion

Proliferation of fibrous tissue that replaces normal collagen after a wound that breaches the dermis

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9
Q

Cyst

A

Fluid filled lesion

Encapsulated cavity containing fluid or semisolid material

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10
Q

Vesicle

A

Fluid filled lesion

Clear fluid filled cavity, <0.5 cm, often thinned roofed

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11
Q

Bulla (Blister)

A

Fluid filled lesion

Clear fluid filled cavity, >0.5 cm, often thinned roofed

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12
Q

Pustule

A

Fluid filled lesion

Cavity is filled with purulent exudate

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13
Q

Abscess

A

Fluid filled lesion

Accumulation of purulent material deep in the dermis or subcutaneous tissue, often fluctuant

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14
Q

Erosion

A

Depressed Lesion

Loss of a portion of the epidermis, usually moist, won’t scar

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15
Q

Ulcer

A

Depressed Lesion

Loss of the epidermis and part of the dermis, heals with scarring

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16
Q

Atrophy

A

Depressed Lesion

Diminution of epidermal cells resulting in thinning, glossy, transparent, and wrinkled appearance

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17
Q

Poikiloderma

A

Depressed Lesion

Atrophy combined with pigmentary changes

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18
Q

Striae

A

Depressed Lesion

Linear depressions that occur from rapid stretching of the skin

19
Q

Sclerosis

A

Depressed Lesion

A diffuse, slightly depressed, hardened area of skin

20
Q

Scale

A

Lesions with Surface Changes

Flakes of skin

21
Q

Crust

A

Lesions with Surface Changes

Develop when serum, blood, or purulent exudate dries on the skin surface

22
Q

Excoriations

A

Lesions with Surface Changes

Surface excavations that result from scratching

23
Q

Lichenification

A

Lesions with Surface Changes

Thickening of the epidermis and some changes in the dermis may be due to continual rubbing of the skin

24
Q

Purpura

A

Vascular Lesions

Reddish-purple lesion that is non-blanchable, indicating blood having left the vessels and moving through other tissues

25
Q

Petechiae

A

Vascular Lesions

Pinpoint purpura

26
Q

Ecchymosis

A

Vascular Lesions

Large purpura; bruise

27
Q

Telangiectasia

A

Vascular Lesions

Persistent dilations of small capillaries. May or may not be blanchable.

28
Q

Angioma

A

Vascular Lesions

Benign tumor with blood vessels; some types blanch others don’t

29
Q

Annular

A

ring-shaped; the edge differs from the center

30
Q

round

A

also called nummular or discoid; coin-shaped

31
Q

arcuate

A

arc-shaped

32
Q

linear

A

resembling a straight line

33
Q

reticular

A

net-like

34
Q

targetoid

A

also called iris; has three distinct zones

35
Q

Grouped

A

clustered together

36
Q

scattered

A

irregularly distributed

37
Q

dermatomal

A

lying in the distribution of a single spinal nerve root

38
Q

sun exposed

A

also called photo distribution; occurs in areas usually not covered by clothing

39
Q

sun protected

A

occurs in areas usually covered by clothing

40
Q

acral

A

occurs on distal locations, such as hands and feet

41
Q

truncal

A

occurs on central body

42
Q

extensor

A

extensor surfaces of knees and elbows

43
Q

flexor

A

flexor surfaces of knees and elbows

44
Q

intertriginous

A

occurring in the skin folds

45
Q

localized

A

confined to a single location

46
Q

generalized

A

widespread

Dermatology (12 decks)

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