Basic Dermatological Lesions

Question 1

Macules

Answer 1

A circumscribed flat area less than 1 cm of discoloration without elevation or depression of surface relative to surrounding skin

Question 2

Patches

Answer 2

A circumscribed area of discoloration, greater than 1 cm, which is neither elevated or depressed relative to the surrounding skin

Question 3

A circumscribed, elevated, solid lesion, less than 1 cm

Answer 3

Papules

Question 4

Plaques

Answer 4

A well-circumscribed, elevated, superficial, solid lesion, greater than 1 cm in diameter

Question 5

Nodules

Answer 5

A palpable, solid lesion, greater than 1 cm in diameter. These are usually found in the dermal or subcutaneous tissue, and the lesion may be above, level with, or below the skin surface

Question 6

Tumors

Answer 6

• Solid, firm lesions
• typically > 2 cm that can be above, level with, or beneath the skin surface.
• aka mass.

Question 7

Wheals (Hives)

Answer 7

Transient, circumscribed, elevated papules or plaques, often with erythematous borders and pale centers.

Question 8

Vesicles (Blisters)

Answer 8

A small, superficial, circumscribed elevation of the skin, less than 0.5 cm, that contains serous fluid

Question 9

A raised, circumscribed lesion greater than 0.5 cm that contains serous fluid

Answer 9

Bullae

Question 10

A small (< 1 cm in diameter), circumscribed superficial elevation of the skin that is filled with purulent material. Can also be described as a vesicle filled with pus

Answer 10

Pustules

Question 11

Example of Macules

Answer 11

Freckles

Question 12

Example of nodules

Answer 12

trichoepithelioma

Question 13

example of patch

Answer 13

vitiligo

Question 14

Example of Papule

Answer 14

syringoma, miliara rubra

Question 15

Herpes zoster is an example of a

Answer 15

Vesicle

Question 16

Psoriasis is an example of

Answer 16

Plaques

Question 17

example of a bullae

Answer 17

impetigo bullosa

Question 18

example of a pustule

Answer 18

furuncle

Question 19

example of a wheals

Answer 19

Urticaria

Question 20

Scales (Excoriation)

Answer 20

Visible fragments of the stratum corneum as it is shed from the skin

Question 21

Crusts/scabs

Answer 21

Varying colors of liquid debris (serum or pus) that has dried on the surface of the skin

Question 22

Excoriations, Abrasions

Answer 22

Skin abrasions, usually superficial, due to scratching of the skin

Question 23

Fissures

Answer 23

Sharply-defined, linear or wedge-shaped tears in the epidermis with abrupt walls

Question 24

Erosions

Answer 24

Loss of superficial layers of upper epidermis by wearing away as from friction or pressure

Question 25

Ulcers

Answer 25

A localized defect in the skin of irregular size and shape where epidermis and some dermis have been lost

Question 26

Scars

Answer 26

Scars are composed of new connective tlssue that replaced lost substance m the dermis or deeper parts as a result of injury or disease, as part of the normal reparative process