Allergic Skin Disease of Dogs & Cats

Question 1

Predominant clinical sign of allergic skin disease

Answer 1

pruritis

Question 2

4 Major allergic skin diseases

Answer 2

1. Flea allergy dermatitis
2. Atopic dermatitis
3. Food allergy
4. Contact allergy

Question 3

Food allergy occurs at what age?

Answer 3

1. < 1 year of age

2. Old dogs

Question 4

Atopy occurs at what age?

Answer 4

1-3 years of age

Question 5

When do you see atopy symptoms?

Answer 5

Seasonally

Question 6

When dod you see food allergy symptoms?

Answer 6

Year-round

Question 7

The distribution of clinical lesions is key for developing a suspicion of what allergic skin disease?

Answer 7

Flea allergy dermatitis

Question 8

The distribution of lesions are identical for what two allergic skin diseases?

Answer 8

Food Allergies & Atopy

Question 9

How do you diagnose Atopy?

Answer 9

ruling out other diseases (NOT by intradermal or serum allergy testing)

Question 10

Signalment: Flea allergy dermatitis?

Answer 10

No age predilection; usually over 6 months of age

Question 11

Signalment: Atopy?

Answer 11

1-3 years

Many breeds including: West Highland White Terrier & English Bulldog

Question 12

Signalment: Food allergy?

Answer 12

1. < 1 year

2. Old patients

Question 13

Signalment: Contact allergy?

Answer 13

No age predilection

Question 14

Seasonality: Flea allergy dermatitis?

Answer 14

BOTH

1. Seasonal
2. Non-seasonal

depending on geography!

often in warm weather

Question 15

Onset of clinical signs: Flea allergy dermatitis?

Answer 15

Rapid onset

Question 16

Seasonality: Atopy?

Answer 16

BOTH

1. Seasonal - grass pollen in summer
2. Non-seasonal - house dust mites
   * some patients may show signs year round but exhibit worsening signs during particular months*

Question 17

Onset of clinical signs: Atopy?

Answer 17

Gradual onset

often starts in summer

Question 18

Seasonality: Food allergy?

Answer 18

Non-Seasonal = ALL YEAR ROUND

Question 19

Onset of clinical signs: Food allergy?

Answer 19

Gradual onset

occasionally more rapid

Question 20

Seasonality: Contact Dermatitis?

Answer 20

BOTH

Seasonal & Non-seasonal depending on what px is allergic to

Question 21

Onset of clinical signs: Contact allergy

Answer 21

Rapid onset

Question 22

Which allergic skin disease may OR may not be pruritic?

Answer 22

Food allergy

Question 23

Which allergic skin disease(s) is always pruritic?

Answer 23

1. Flea allergy dermatitis
2. Atopy
3. Contact Allergy

Question 24

Common lesions of all allergic skin diseases?

Answer 24

1. Excoriation
2. Alopecia
3. Erythema
4. Hyperpigmentation
5. Lichenification

Question 25

Dog Lesion location: Flea allergy dermatitis?

Answer 25

Caudal half of body: 1. Dorsal lumbosacral region 2. Tailbase 3. Perineum 4. Thighs 5. Umbilicus

Question 26

Dog Lesions of Flea allergy dermatitis are NOT usually found where?

Answer 26

Ears

Question 27

Dog Lesion location: Atopy?

Answer 27

1. Face 2. Paws 3. Distal extremities 4. Ears 5. Ventrum

Question 28

Dog Lesion location: Food allergy

Answer 28

1. Face 2. Paws 3. Distal extremities 4. Ears 5. Ventrum * Same as Atopy*

Question 29

Dog Lesion location: Contact Allergy?

Answer 29

Usually hairless areas that readily come in contact with the environment: 1. abdomen 2. muzzle 3. ventrum of paws

Question 30

Dog Lesions of contact allergy are NOT usually found where?

Answer 30

Ears - unless contact allergy is to ear medication

Question 31

Dog Primary lesions of Contact allergy?

Answer 31

1. Vesicles | 2. Papules

Question 32

What lesions do CATS present with for allergic skin diseases?

Answer 32

1. Can present with same lesions as dogs OR 2. Reaction patterns - Miliary dermatitis - Eosinophilic granuloma complex

Question 33

What lesions make up miliary dermatitis in cat?

Answer 33

diffuse crusted papules

Question 34

What lesions make up the Eosinophilic Granuloma Complex in the Cat?

Answer 34

1. Indolent Ulcer 2. Eosinophilic Granuloma 3. Eosinophilic plaque

Question 35

Eosinophilic Granuloma Complex: Indolent Ulcer 1. what is it? 2. where is it?

Answer 35

1. ulcerative symmetrical lesion | 2. on the upper lip

Question 36

Eosinophilic Granuloma Complex: Eosinophilic Granuloma 1. where is it?

Answer 36

found in mouth or body

Question 37

Eosinophilic Granuloma Complex: Eosinophilic Plaque 1. what is it? 2. where is it?

Answer 37

1. linear plaques | 2. on caudal thighs

Question 38

CAT lesion location: Flea allergy dermatitis?

Answer 38

1. caudal dorsal OR 2. Face & neck * Symmetrical Alopecia*