Dermatology Lecture 1

Question 1

What is the normal colour of a dogs skin?

Answer 1

Normal colour of a dogs skin is typically whitish-grey colour

Question 2

What is erythema?

Answer 2

Erythema = skin that appears to be redder than normal

Question 3

What is hyperpigmentation?

Answer 3

Skin that is darker than normal - leading to black/coloured skin

Question 4

Describe the change that is shown below:

Answer 4

Erythema

Question 5

Name the change that is shown below:

Answer 5

Erythema

Question 6

Name the skin condition that is shown below:

Answer 6

Erythema

Question 7

Name the skin condition that is shown in the image below:

Answer 7

Hyperpigmentation

Question 8

Name the condition that is shown in the skin below:

Answer 8

Hyperpigmentation

Question 9

Name the condition that is shown in the image below:

Answer 9

Hyperpigmentation

Question 10

Name the condition that is shown in the image below:

Answer 10

Hyperpigmentation

Question 11

Name the condition that is shown in the image below:

Answer 11

Hyperpigmentation

Question 12

Name the condition that is shown in the image below:

Answer 12

Loss of pigment

Question 13

Name the condition that is shown in the image below:

Answer 13

Loss of pigment

Question 14

Name the condition that is shown below:

Answer 14

Loss of pigment

Question 15

Name the condition that is shown below: (hint combination of three things)

Answer 15

Rash - collection of skin lesions - erythymatous macules, papules and pustules

Question 16

Name the conditions that are shown below and provide a definition of it:

Answer 16

Erythematous mascule: circular, flat area pf erythematous skin - up to 1 cm in diameter

Question 17

Name the condition that is shown below and define it:

Answer 17

Papules - small, red, raised, circular solid mass less than 1 cm in diameter

Question 18

Name the condition that is shown below and proivde a definition of it:

Answer 18

Pustule - red, circular spot containing a central, yellow sac of pus

Question 19

Name the condition that is shown below and provide a definition of it:

Answer 19

Staphylococcal ring

Question 20

Name the two ways in which allopecia can arise:

Answer 20

1. Alopecia - common presenting sign - spontaneously/or secondary to pruritis
2. Spontaneous allopecia - sign of disorder affecting hair follicle - follicular infections and endocrine disorders

Question 21

Name the condition that is shown below:

Answer 21

Focal alopecia

Question 22

Name the condition that is shown below:

Answer 22

Regional allopecia

Question 23

Name the condition that is shown below:

Answer 23

Multifocal allopecia

Question 24

Name the condition that is shown in the image below:

Answer 24

Symmetric diffuse truncal allopecia

Question 25

Name the condition that is shown below and explain how it arises:

Answer 25

Excess scale - superficial layers of stratum corneum are being continously desquamated - any process that disrupts this leads to visible skin lesion of scale

Question 26

Name the condition that is shown below:

Answer 26

Scale

Question 27

Name the condition that is shown in the skin below:

Answer 27

Hyperkeratosis - pathological term meaning thickening of the stratum corneum \* note clinically is is reserved for thick adherent keratin on the nasal planum or footpads

Question 28

Name the condition that is shown in the image below:

Answer 28

Comedone - dilated hair follicle filled with cornified cells and sebacceous material appears black/brown (black head)

Question 29

Name the condition shown in the image below:

Answer 29

Follicular casts - adherent sheath of scale surrounding a hair shaft above the skins surface

Question 30

Name the condition that is shown below:

Answer 30

Lichenification

Question 31

Name the condition that is shown below:

Answer 31

Cutaneous atrophy

Question 32

Name the condition that is shown in the image below:

Answer 32

Plaque: Localised patch of thickened skin - the one seen above is an example of a feline esoinophillic plaque

Question 33

Define the term erosion:

Answer 33

A shallow defect in which epidermis is missing but basement membrane is intact

Question 34

Define the term ulcer:

Answer 34

A deeper defect in which the epidermis is absent exposing the underlying dermis

Question 35

What is a draining tract/sinus?

Answer 35

Opening between underlying dermis or subcutis and skin surface through which exudate is normally discharging

Question 36

State the lesion that is shown in the skin below:

Answer 36

Erosion - shallow defect in which epidermis is missing but basement membrane is intact

Question 37

Name the condition that is shown below:

Answer 37

Ulcer - Deeper defect in which epidermis absent exposing the underlying dermis

Question 38

Name the condition that is shown below:

Answer 38

Draining tract/sinus - associated with deep infections

Question 39

Name the condition that is shown below:

Answer 39

Nodule - raised, firm, palpable mass \> 1 cm

Question 40

Name and define lesion that is shown below:

Answer 40

Wheal: Circumscribed, circular, raised lesion with a flat surface - caused by oedema - white to pink and occurs with urticaria

Question 41

State the condition that is shown below:

Answer 41

Cyst - epithelial lined cavity filled with skin components - corneocytes, keratin, hait of sebum