dermatologic system overview

Question 1

flat, circumscribed area that is change in skin color; usually <1 cm diameter

Answer 1

macule

Question 2

freckles, flat moles, measles, scarlet… are examples of what?

Answer 2

macules

Question 3

flat, non palpable irregular shaped macule >1 cm in diameter

Answer 3

patch

Question 4

vitiligo, Mongolian spots, cafe au lait… examples of what?

Answer 4

patch

Question 5

elevated, firm, circumscribed area; < 1 cm

Answer 5

papule

Question 6

wart, elevated moles, lichen planus….examples of what?

Answer 6

papule

Question 7

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

Answer 7

plaque

Question 8

psoriasis, seborrheic and actinic keratosis

Answer 8

plaque

Question 9

elevated, irregular-shaped area of cutaneous edema

Answer 9

wheal

Question 10

caused by movement of fluid out of vessels

Answer 10

wheal

Question 11

insect bites, urticaria, allergic reaction…examples of what?

Answer 11

wheal

Question 12

elevated, usually firm, circumscribed lesion; deeper into dermis than papule; 1-2 cm diameter

Answer 12

nodule

Question 13

erythema nodosum, lipoma, hypertrophic nodule…examples of what?

Answer 13

nodule

Question 14

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

Answer 14

tumor

Question 15

lipomas, neoplasms, benign tumor…examples of what?

Answer 15

tumor

Question 16

elevated, circumscribed, superficial, not into dermis; filled with serous fluid; < 1 cm

Answer 16

vesicle

Question 17

varicella (chicken pox), herpes zoster (shingles)… examples of what?

Answer 17

vesicle

Question 18

vesicle > 1 cm in diameter

Answer 18

bulla

Question 19

blister and pemphigus and examples of what?

Answer 19

bulla

Question 20

elevated, superficial lesion; similar to vesicle but filled with purulent fluid

Answer 20

pustule

Question 21

acne vulgaris, folliculitis, impetigo… examples of what?

Answer 21

pustule

Question 22

elevated, circumscribed, encapsulated lesion in dermis or subcutaneous layer; filled with liquid or semi-solid material

Answer 22

cyst

Question 23

sebaceous cyst, cystic acne

Answer 23

cyst

Question 24

vascular lesion: pinpoint (< 0.5 cm), nonraised, round, purplish, red spots caused by intradermal hemorrhage

Answer 24

petechiae

Question 25

vascular lesion: red-purple nonblanchable discoloration > 0.5 cm caused by intradermal hemorrhage

Answer 25

purpura

Question 26

a hemorrhagic spot in the skin forming a non-elevated, sometimes irregular blue or purplish patch

Answer 26

ecchymoses

Question 27

fine irregular red lines caused by capillary dilation

Answer 27

telangiectasia

Question 28

superficial, heaped up, flakes composed of keratinized (dead) epidermal cells, size varies

Answer 28

scales

Question 29

raised areas of dried serum, blood, or purulent exudates; varies in size and color; develop after vesicles release their content

Answer 29

crusts

Question 30

rough, thickened epidermis secondary to persistent rubbing or scratching

Answer 30

lichenification

Question 31

fibrous tissue that replaces normal skin following injury

Answer 31

scar

Question 32

elevated, irregular progressively enlarging scar beyond boundaries of wound; caused by excessive collagen formation during healing

Answer 32

keloid

Question 33

loss of epidermis and dermis; concave; varies in size

Answer 33

ulcers

Question 34

linear crack of break from the epidermis to the dermis

Answer 34

fissures

Question 35

loss of epidermis; linear hollowed-out crusted area (ex. abrasion or scratch)

Answer 35

excorations

Question 36

loss of part of the epidermis; depressed; follows rupture of a vesicle or bulla (ex. varicella after rupture)

Answer 36

erosion

Question 37

thinning of skin surface and loss of skin markings; skin is translucent and paper-like

Answer 37

atrophy