Intro

Question 1

Wheal

Answer 1

• hive
• sharply circumscribed skin elevation, edema of dermis
• typical of allergy
• redness due to vasodilation, goes away with diascopy

Question 2

Macule

Answer 2

altered in color, not elevated

if >1cm = patch

Question 3

Papule

Answer 3

solid raised lesion, distinct borders

<1cm

Question 4

Plaque

Answer 4

elevated, flattened
>1cm
(forms from a papule)

Question 5

Pustule

Answer 5

• elevated, with pus
• bacterial infections
• follicular (demodex, dermatophytes, bacterial)
• nonfollicular

Question 6

epidermal collarettes

Answer 6

secondary lesion from pustules that have coalesced together. flaky top
looks like peeling sun burn

Question 7

crust

Answer 7

dried exudate

there was a pustule (neutrophils/bacteria)

Question 8

scar

Answer 8

healing wound, associated with allopecia, depigmentation or thinner dermis

Question 9

vesicle

Answer 9

• clear fluid filled blister <1cm

- acute contact dermatitis, some autoimmune skin diseases

Question 10

Bulla

Answer 10

• fluid filled blister >1cm

- burns, contact dermatitis, drug reaction, autoimmune

Question 11

Nodule

Answer 11

firm lesion, extends into dermis or SC

Question 12

Tumor

Answer 12

swelling/enlargement

sometimes neoplastic

Question 13

Scale

Answer 13

flake of abnormal or compacted epithelial cells

Question 14

Ulcer

Answer 14

vesicle/Bulla broken open

may imply full thickness loss of epidermis

Question 15

Excoriations

Answer 15

Superficial erosion (more superficial than ulcer)

Question 16

Lichenification

Answer 16

• thickening of skin
• secondary to chronic trauma /inflammation
  (often antebrachial due to allergy)

Question 17

Hyperpigmentation

Answer 17

commonly associated with lichenification

Question 18

hyperkeratosis

Answer 18

thick, crusty foot pads, stratum corneum

Question 19

depigmentation

Answer 19

loss of pigment, basement membrane affected cancer or inflam

Question 20

salivary staining

Answer 20

he’s been licking!