Dermatology Clinical Skills

Question 1

Purpura

Answer 1

Due to extravastation of blood, will not blanche, may be raised >2mm

Question 2

Petechia

Answer 2

<1-2mm are of flat purpura

Question 3

Hypopigmentation

Answer 3

Lack of melanin

Question 4

Hyperpigmentation

Answer 4

Increased melanin
Hameosiderin
Direct chemic staining

Question 5

Macule

Answer 5

Flat lesion, localised colour change

<1cm

Question 6

Patch

Answer 6

Flat lesion, localised colour change

>1cm

Question 7

Papule

Answer 7

Localised elevated area <0.5cm

Question 8

Nodule

Answer 8

Localised elevated area >0.5cm

Question 9

Plaque

Answer 9

Raised edge and flatter surface

Question 10

Wheal

Answer 10

Compressable dermal swelling

Question 11

Vesicle

Answer 11

Fluid filled <0.5cm

Question 12

Bulla

Answer 12

Fluid filled >0.5cm

Question 13

Cyst

Answer 13

Nodule containing semi-solid material

Question 14

Pustule

Answer 14

Pus filled lesion

Question 15

Scale

Answer 15

Accumulated fragments of keratin layer

Question 16

Crust

Answer 16

Dried exudate e.g. serum

Question 17

Lichenified

Answer 17

Thickening with increased skin markings

Question 18

Scar

Answer 18

Normal tissue replaced by fibrous tissue

Question 19

Fissures

Answer 19

Linear split in epidermis

Question 20

Atrophy

Answer 20

Loss of epidermis +/- dermis

Question 21

Erosion

Answer 21

Superficial break in epidermis

Question 22

Ulcer

Answer 22

Deeper break into dermis