Skin Lesion Descriptions

Question 1

Bullae

Answer 1

Vesicle >1cm diameter
Thin Roof–breaks easily
Thick Roof-at the dermal/epidermal junction, harder to break
Primary lesion

Question 2

Cyst

Answer 2

Elevated, circumscribed, encapsulated lesion
In dermis or SubQ layer
Filled with liquid or semi-solids
Primary lesion

Question 3

Ecchymoses

Answer 3

Hemorrhagic spot in skin or mucous membrane
Forms non-elevated, rounded, or irregular blue or purplish patch
Primary lesion

Question 4

Macule

Answer 4

Flat, non-palpable area of skin with different color than surrounding skin
Circumscribed
<1cm diameter
No elevation or depression of skin
Primary lesion

Question 5

Nodules

Answer 5

Solid, elevated circumscribed area
1-2 cm in diameter
Protrudes into dermis
Involves Epidermis-scales, erosion, loss of skin markings
Involves Dermis-Fluctuant (cyst), firm (cancer)
Primary lesion

Question 6

Petechiae

Answer 6

Pinpoint, nonraised, round, purplish-red spots
Caused by intradermal or submucous hemorrhage
Primary lesion

Question 7

Purpura

Answer 7

Small hemorrhages in skin or mucous membrane

Primary lesion

Question 8

Pustule

Answer 8

Elevated, superficial lesion
Similar to vesicle but filled with purulent fluid
Primary lesion

Question 9

Plaque

Answer 9

Elevated, firm, and rough lesion with flat top and surface
>1 cm diameter
Evolves from papules
Slightly elevated
Primary lesion

Question 10

Papules

Answer 10

Solid, elevated circumscribed area
<1cm diameter
Includes epidermis-scaling or disturbances
Includes dermis-accompanied with redness
Primary lesion

Question 11

Patches

Answer 11

Flat, non palpable area of skin with different color than surrounding skin
Irregular border
>1cm diameter
Primary lesion

Question 12

Tumor

Answer 12

Elevated and solid lesion
May or may not have clear edges (demarcated)
Deep in dermis
>2 cm diameter
Primary lesion

Question 13

Telangiectasia

Answer 13

Fine, irregular, red lines
Produced by capillary dilation
Primary lesion

Question 14

Vesicle

Answer 14

Elevated, circumscribed, and superficial (NO DERMIS INVOLVEMENT)
Filled with serous fluid
<1 cm diameter
Primary lesion

Question 15

Wheals

Answer 15

Special Plaque
Slight elevation due to fluid from blood vessels
Elevated, irregular-shaped area of cutaneous edema
Solid, transient, variable diameter
Primary lesion