Term 1

Question 1

Annular

Answer 1

Circular

Begins in Center and spreads out

Ex. Ringworm

Question 2

Confluent

Answer 2

Legions that merge together

Ex. Hives

Question 3

Discrete

Answer 3

Distinct and individual lesions remaining separate

Ex. Mole or wart

Question 4

Linear

Answer 4

Streak or strike

Ex. Scratch

Question 5

Polycyclic

Answer 5

Annular lesions growing together

Ex. Psoriasis

Question 6

Zosteriform

Answer 6

Linear lesion arrangement along a nerve route

Ex. Shingles or herpes

Question 7

Grouped

Answer 7

Cluster of lesions

Ex. Contact dermatitis

Question 8

Gyrate

Answer 8

Twisted or spiraled lesion

Question 9

Target (iris)

Answer 9

Concentric rings of colour

Ex. Lime disease

Question 10

What is a primary lesion

Answer 10

A lesion developed on previously normal skin

Question 11

Macule

Answer 11

Flat and self contained lesion

Less than 1 cm

Ex. Freckle or mole

Question 12

Patch

Answer 12

Macule greater than 1cm

Ex. Cafe ola or Mongolian spot

Question 13

Papule

Answer 13

Solid self contained thickening in epidermis

Less than 1cm

Ex elevated mole or wart

Question 14

Plaque

Answer 14

Papules joined together; disk-like lesions

Wider than 1cm

Ex Psoriasis

Question 15

Nodule

Answer 15

Solid elevated, may extend deeper to dermis and be above or below dermis

Greater than 1cm

Ex skin tag or fibroma

Question 16

Tumour

Answer 16

Extended deeper to dermis

Larger than 2cm

Ex hemangioma

Question 17

Wheal

Answer 17

Superficial and raised; slightly more irregular than edema

Ex mosquito bite or allergic reaction

Question 18

Urticaria (hives)

Answer 18

Wheals that join together to give be an extended reaction

Question 19

Vesicle (blister)

Answer 19

Elevated cavity containing fluid

1cm or less

Ex early chicken pox or shingles

Question 20

Bulla

Answer 20

Usually single chambered wall of fluid

Greater than 1cm

Ex friction blister or burns

Question 21

Cyst

Answer 21

Encapsulated fluid in the dermis or subcutaneous tissue, elevated

Ex sebaceous cyst

Question 22

Pustule

Answer 22

Self-contained cavity filled with pus

Ex. Acne

Question 23

What is a secondary lesion

Answer 23

Change from primary lesion over time

Question 24

Crust

Answer 24

Thickened dried out exodate left from vesicles or pustules burst or dried out

Question 25

Scale

Answer 25

Dry or greasy flakes of skin from shedding of dead excess keratin cells Ex dry skin, excema, psoriasis

Question 26

Fissure

Answer 26

Linear cracked, abrupt edges, extends to dermis Ex cracked at side of mouth or from dry skin

Question 27

Erosion

Answer 27

Superficial depression to dermis. Stays in epidermis so moist but no bleeding; no scar Ex dermatitis or abrasion

Question 28

Ulcer

Answer 28

Deeper depression to dermis, irregular shape, may bleed and leaves scar Ex pressure sore or canker

Question 29

Excoriation

Answer 29

Self inflicted abrasion, sometimes crusted from itching or scratching, picking of pimples; scar with healing

Question 30

Scar

Answer 30

Made of collagen or connective tissue replacing normal tissue after lesion

Question 31

Atrophic scar

Answer 31

Depression of skin level from loss of skin tissue, thinning of epidermis Ex Stria or stretch marks

Question 32

Lichenification

Answer 32

Thickening of the skin with production of tight papules; caused by prolonged scratching Looks like moss or lichen

Question 33

Keloid

Answer 33

Elevation from excess collagen during wound healing; may increase after healing incures

Question 34

What are the vascular lesions

Answer 34

Hemangiomas, telangiectases, purpuric lesions

Question 35

Hemangiomas

Answer 35

Caused by benign proliferation of blood vessels in the dermis

Question 36

Port wine stain

Answer 36

Large flat macular patch covering scalp or face Present at birth and usually doesn’t fade

Question 37

Strawberry mark

Answer 37

Raised red area with well defined borders; formed from immature capillaries, present at birth, and develop during the first few months of life but disappear from 5-7 Usually 2-3 cm

Question 38

Cavernous hemangioma

Answer 38

Reddish blue irregularly shaped solid mass of BVs May be present within the first year of life and don’t go away on their own

Question 39

Telangiectases

Answer 39

Appearance of BVs on the surface of skin

Question 40

Telangiectasia

Answer 40

BVs are permanently enlarged and dilated Known as spider veins

Question 41

Spider or star angioma

Answer 41

Red shaped marking with solid circular center; left of capillaries extend from center

Question 42

Venous lake

Answer 42

Dilation of smaller BVs in a star like linear pattern Usually near varicose veins; most common in older people

Question 43

What are Purpuric lesions

Answer 43

Caused by blood leaking out of vessels RBCs and blood pigments are deposited into tissue

Question 44

Petechiae

Answer 44

Tiny punctite hemorrhages- from bleeding of superficial capillaries in skin

Question 45

Purpura

Answer 45

Excessive patch of confluent petechiae greater than 3mm in size Can cause thrombocytopenia- low platelets