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Year 4 > Bovine Derm > Flashcards

Flashcards in Bovine Derm Deck (38)
1

What is a hygroma?

Localised swelling of soft tissues, usually around carpus

2

Where are you more likely to see lice on a cow?

Back and neck,+/- pruritus
Look for lice and eggs

3

How do you treat lice?

Ivermectins, permethrins

4

How do you prevent flies?

Permethrins (eg impregnated tags/pour-ons)

5

How do you diagnose mange?

Skin scrape

6

Which kind of cattle are you more likely to see chorioptic mange in?
Where are the lesions located?
What are the clinical signs?

-Housed cattle, winter
-Tail head lesions, udder
-Pruritus, erythema, crusts, rubbing

7

How do you treat chorioptic mange?

Ivermectins (check milk withhold)

8

How do you treat psoroptic mange?

NOT IVERMECTINS
4% permethrin pour-on

9

Ringworm is usually seen in what age of cows?

-Calves (housed), esp on head
-Grey, crusty lesions

10

What causes ringworm?

Trichophyton verrucosum

11

How do you treat ringworm?

Enilconazole
Turn out
Treat any underlying husbandry conditions/diseases

12

How do you treat Dermatophillus congolensis (rainscald)?

Penicillin, oxytetracycline

13

What causes 'Wooden Tongue'?
What skin lesions would you see?

-Actinobacillus
-Abscessation and fistulation
-Granulomatous lesions
-Especially on head and LNs; abscessation of tongue and swelling of ventral jaw

14

How do you treat Actinobacillus ('Wooden Tongue')?

-Antibiotics (pen/strep, oxytet)
-Potassium iodide (drench or iv, not licensed)

15

Where is cellulitis usually seen?
What is it usually caused by?

Head and neck, gross swelling
Staphs and Clostridia

16

How do you treat cellulitis?

Antibiotics

17

A deficiency in what causes a brown tinge to the hair coat?

Copper

18

What causes a popliteal abscess?

Ascending infection from foot

19

What is Bovine Neonatal Pancytopenia?

-'Blood sweating disease'
-Newborn to 4 weeks old
-Bleeding from orifices, injection sites, skin, internal haemorrhages
-Bone marrow and blood changes eg pale mm (aplastic anemia)

20

How is lumpy skin disease transmitted?

Biting flies, ticks, needles

21

What are the clinical signs of lumpy skin disease?

-Fever
-Skin nodules, erosions
-Enlarged LNs
-Nasal discharge
-Mastitis
-Emaciation

22

Why may a cow have pelvic/upper HL or 'neck rub' skin injuries?

Poor cubicle design (and feed barrier position in the case of neck rub)

23

What do flies transmit?

Summer Mastitis (Trueperella pyogenes, Strep dysgalactiae)
New Forest Eye (Moraxella bovis)

24

Give the clinical signs of sarcoptic mange

Intense pruritus
Alopecia, crusting, thickening of skin
Head, neck, shoulders
Zoonotic

25

Give the clinical signs of psoroptic mange

Intense pruritus
Bloody, crusty lesions on shoulders and tail head, hair loss, skin thickening
Weight loss, death

26

What causes impetigo and where is it usually seen?

Pustular staph infection
Udder and perineum

27

Where are lesions seen with Dermatophillus congolensis?

Crusts on back and udder
'Rain scald'
Wet conditions, uncommon

28

How do you diagnose Dermatophillus congolensis?

Smear and methylene blue stain

29

What causes primary and secondary photosensitisation?

Primary: photodynamic agents in diet
Secondary: hepatic damage

30

How does urticaria often present?

Sudden onset oedema of vulva

31

How do you treat urticaria?

Anti-histamines, corticosteroids
Resolves spontaneously

32

What age of cows are affected by warts (papilloma virus)?
Do you need to treat?

Young animals
Resolve spontaneously

33

What should you do if you see a haematoma on a cow?

Leave it! Will resolve spontaneously

34

What causes pseudocowpox?
Where are lesions seen and what do they look like?

Parapox virus
Vesicules and pustules on teats -> horseshoe-shaped lesions

35

How do you treat pseudocowpox?

No specific treatment, may resolve and recur

36

What is 'Blackspot' and what causes it?

Necrotic lesion around teat ends
Caused by Fusobacterium necrophorum

37

Describe the appearance and treatment of Bovine Papular Stomatitis

Small red papules on muzzle and lips
No tx necessary

38

Describe intertrigo

Eczematous dermatitis in between the two sides of the udder/between the udder and thighs, as a result of constant rubbing
Usually 2-4 weeks post-calving
Affected skin is inflamed, painful, offensive smell, congealed serous material
Tx: antiseptic soap, local steroid cream