CM: Derm - Skin lesions

Question 1

Flat, generally less than or equal to 1 cm with a color different from surrounding tissue. May have non-palpable fine scale.

Answer 1

Macule

Question 2

Flat, generally greater than 1 cm with a color different from that of surrounding tissue. May have non-palpable fine scale.

Answer 2

Patch

Question 3

A smooth, raised closed cavity or sac containing fluid or semisolid material. May have an epithelial, endothelial or membranous lining

Answer 3

Cyst

Question 4

A dermal or subcutaneous firm, well defined lesion usually greater than 1 cm in diameter

Answer 4

Nodule

Question 5

A discrete, solid, elevated body usually less than or equal to 1 cm in diameter. Classified by shape, size, color and surface change

Answer 5

Papule

Question 6

A discrete, solid body usually broader than it is thick, measuring more than 1 cm in diameter. Classified by shape, size, color and surface change

Answer 6

Plaque

Question 7

A hardened layer that results when serum, blood or purulent exudate dries on the skin. May thick or thin and can vary in color.

Answer 7

Crust

Question 8

a surface change that results from excess stratum corneum that accumulates in flakes or plates. Usually white or gray in color.

Answer 8

Scale

Question 9

Fluid-filled blisters greater than 0.5 cm in diameter. Fluid can be clear, serous, hemorrhagic or pus filled

Answer 9

Bullae

Question 10

A circumscribed elevation that contains purulent material. Usually less than or equal to 0.5 cm.

Answer 10

Pustule

Question 11

A fluid-filled cavity or elevation less than or equal to 0.5 cm in diameter. Fluid may be clear, serous, or hemorrhagic.

Answer 11

Vesicle

Question 12

Localized, blanchable redness of skin or mucous membrane

Answer 12

Erythema

Question 13

A generalized, blanchable redness of the skin that may be associated with desquamation (process in which the cornified layer of epidermis is sloughed in fine scales or sheets

Answer 13

Erythoderma

Question 14

A visible persistent dilation of small, superficial cutaneous blood vessels that blanch

Answer 14

Telangiectasia

Question 15

Extravasation of blood into skin or mucous membranes. Presents as a flat area of color change that does not blanch

Answer 15

Ecchymosis

Question 16

Tiny 1-2 mm, initially purpuric, non-blanchable macules

Answer 16

Petechiae

Question 17

Raised, palpable discoloration of skin or mucous membrane that does not blanch and is due to vascular inflammation in the skin and extravasation of blood

Answer 17

Palpable purpura

Question 18

Thinning of tissue defined by location

Answer 18

Atrophy

Question 19

Localized loss of epidermal or mucosal epithelium

Answer 19

Erosion

Question 20

Circumscribed loss of epidermis and at least the upper dermis. Classified by depth, border/shape, edge and tissue at base.

Answer 20

Ulcer

Question 21

Scab or dry crust that results from trauma, infection, or excoriating skin disease

Answer 21

Eschar

Question 22

Necrotic tissue due to obstruction, diminution or loss of blood supply. Can be wet or dry.

Answer 22

Gangrene

Question 23

Skin thickening, hyperpigmentation and increased skin markings; thick, leathery appearance

Answer 23

Lichenification

Question 24

Partial damage to the epidermis by injury or rubbing

Answer 24

Excoriation

Question 25

Koebner Phenomenon

Answer 25

Aspect of psoriasis that’s well-known but not completely understood. It describes the formation of psoriatic skin lesions on parts of the body that aren’t typically where a person with psoriasis experiences lesions.

Question 26

Auspitz Sign

Answer 26

The appearance of small bleeding points after successive layers of scale have been removed from the surface of psoriatic papules or plaques.