Dermatology I

Question 1

Macule

Answer 1

Flat, variable shape, nonpalpable color change

Question 2

Papule

Answer 2

Small, raised lesion

Question 3

Plaque

Answer 3

Elevated plateau-like lesion, superficial

Question 4

Nodule

Answer 4

Firm papule, palpable, extends into dermis of SubQ tissue. A tumor is a nodule larger than 10mm

Question 5

Vesicle

Answer 5

Fluid-filled blister

Question 6

Bullae

Answer 6

Vesicles larger than 10mm

Question 7

Pustule

Answer 7

Elevated lesion containing pus

Question 8

Urticaria

Answer 8

Transient elevated lesion due to localized edema

Question 9

Scale

Answer 9

Accumulation of epithelium; dry, whitish

Question 10

Crust

Answer 10

Dried, serous, exudate on the surface usually due to broken pustules or vesicles

Question 11

Ulcer

Answer 11

Deeper erosions involving the dermis; bleed and scat

Question 12

Erosion

Answer 12

Loss of epidermis

Question 13

Petechiae

Answer 13

Small non-blanchable punctuate foci of hemorrhage

Question 14

Petechiae

Answer 14

Small, non-blanchable punctuate foci of hemorrhage

Question 15

Purpura

Answer 15

Larger areas of petechiae or hemorrhage, maybe palpable

Question 16

Ecchymoses

Answer 16

Larger areas of bruising when there is swelling beneath the skin

Question 17

Atrophy

Answer 17

Paper thin wrinkled and dry-appearing skin, normal process of skin aging

Question 18

Scar

Answer 18

Fibrous tissue replacement after an injury

Question 19

Telangiectasia

Answer 19

Dilated superficial blood vessels

Question 20

Shape of lesion

Answer 20

Linear
Annular - rings with central clearing
Nummular - circular
Target - rings with central duskiness
Serpiginous - fungal and parasitic infections
Reticulated - lacy pattern

Question 21

Texture

Answer 21

Verrucous - irregular surface
Lichenification - epidermal thickening with accentuation of skin lines due to chronic irritation
Induration - dermal thickening, skin feels hard and rough
Umbilicated - lesion with a central indentation

Question 22

Color

Answer 22

Red - Erythema
Orange
Yellow - jaundice
Green - fingernails, Pseudomonas infection
Violet - darkening cutaneous hemorrhage, vasculitis
Gray/blue skin - cyanosis, metal deposits
Black: melanocytic lesions, infection, arterial insufficiency
White - tinea, Pityriasis alba, vitiligo

Question 23

Dermatographism

Answer 23

Urticaria after stroking the skin

Question 24

Diascopy

Answer 24

Pressure to indicate blanching (hemorrhagic lesions don’t blanch, inflammatory lesions do)

Question 25

Darier's sign

Answer 25

Stroking lesions causes intense and sudden erythema and wheal formation

Question 26

Nikolsky's Sign

Answer 26

Bullae formation and erosion following gentle traction pressure

Question 27

Auspitz' Sign

Answer 27

Pinpoint bleeding after removal of plaques. Can be done with a slide.

Question 28

Koebner's phenomenon

Answer 28

Development of lesions within areas of trauma