Primary Skin Lesions

Front 1

macule

Back 1

flat, circumscribed, change in color, < 1 cm

Front 2

example of macule

Back 2

freckles, flat moles (nevi), petechiae, measles, scarlet fever

Front 3

papule

Back 3

elevated, firm, circumscribed area, < 1 cm

Front 4

example of papule

Back 4

wart (verruca), elevated moles, lichen planus

Front 5

patch

Back 5

flat, nonpalpable, irregular shaped macule, > 1 cm

Front 6

example of patch

Back 6

vitiligo, port-wine stains, Mongolian spots, cafe au lait patch

Front 7

plaque

Back 7

elevated, firm, rough lesion with flat top surface > 1 cm

Front 8

example of plaque

Back 8

psoriasis, seborrheic and actinic keratoses

Front 9

wheal

Back 9

elevated, irregular-shaped, area of cutaneous EDEMA; solid, transient, variable diameter

Front 10

example of wheal

Back 10

insect bites, urticaria, allergic rxn.

Front 11

nodule

Back 11

elevated, firm, circumscribed; deeper in dermis than papule, 1-2 cm

Front 12

example of nodule

Back 12

erythema, nodosum, lipomas

Front 13

tumor

Back 13

elevated and solid, may or may not be clearly demarcated; deeper in dermis, > 2 cm

Front 14

example of tumor

Back 14

neoplasms, benign tumor, lipoma, hemangioma,

Front 15

vesicle

Back 15

elevated, circumscribed, superficial, NOT into dermis; filled with SEROUS FLUID, < 1 cm

Front 16

example of vesicle

Back 16

varicella (chicken-pox), herpes zoster (shingles)

Front 17

bulla

Back 17

vesicle > 1 cm

Front 18

example of bulla

Back 18

blister, pemphigus vulgaris

Front 19

pustule

Back 19

elevated, superficial lesion; filled with PURULENT FLUID

Front 20

example of pustule

Back 20

impetigo, acne

Front 21

cyst

Back 21

elevated, circumscribed, encapsulated; filled with LIQUID or SEMI-SOLID material

Front 22

example of cyst

Back 22

sebaceous cyst, cystic acne

Front 23

Telangiectasia

Back 23

fine, irregular, red lines produced by CAPILLARY dilation

Front 24

scale

Back 24

heaped-up, keratinized cells; flaky skin; irregular; thick or thin; dry or oily; varies in size

Front 25

example of scale

Back 25

seborrheic dermatitis

Front 26

lichenification

Back 26

rough, thickened epidermis secondary to persistent rubbing, itching, or skin irritation; often involves flexor surface of extremity

Front 27

example of lichenification

Back 27

chronic dermatitis

Front 28

keloid

Back 28

irregular-shaped, elevated, progressively enlarging scar; grows beyond boundary of wound; caused by excessive collagen formation during healing

Front 29

scar

Back 29

fibrous tissue that replaces normal skin following injury or laceration to dermis

Front 30

excoriation

Back 30

loss of the epidermis; linear hollowed-out, crusted area

Front 31

example of excoriation

Back 31

abrasion or scratch, scabies

Front 32

fissure

Back 32

linear crack or break from the epidermis to the dermis; moist or dry

Front 33

example of fissure

Back 33

athlete's foot, cracks at the corner of the mouth

Front 34

erosion

Back 34

loss of part of the epidermis; depressed, moist, glistening; follows rupture of VESICLE or BULLA

Front 35

example of erosion

Back 35

varicella, variola after rupture

Front 36

ulcer

Back 36

loss of epidermis and dermis; concave; varies in size

Front 37

example of ulcer

Back 37

Decubiti, stasis ulcers

Front 38

crust

Back 38

dried serum, blood, or purulent exudates; brown, red, black, tan, or straw-colored

Front 39

example of crust

Back 39

scab on abrasion, eczema

Front 40

atrophy

Back 40

thinning of skin surface and loss of skin markings; skin translucent and paperlike

Front 41

example of atrophy

Back 41

striae; aged skin