Pruritus 5 - Cats Flashcards

1
Q

How does pruritus in the cat differ from that in the dog?

A

Owner may not see pruritus

Body localization is not as distinctive 
Skin lesions are different 
— bilateral symmetrical hair looks with normal skin 
— miliary dermatitis
—eosinophilic granuloma complex
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2
Q

Two most common skin conditions in cats?

A

FLEAS

Ringworm

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3
Q

What is your DDX for self-induced feline symmetrical alopecia ?

A

Psychogenic

Pruritic
- allergy —> flea allergy, atopy, food allergy

  • ectoparasites —> notoedris, demodex, and fur mites
  • infections —> pyoderma, yeasts, dermatophytes
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4
Q

How do you diagnose psychogenic alopecia?

A

Diagnosis of rule out — eliminate all causes of pruritic dermatosis

Anxiety

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5
Q

Psychogenic alopcia is most commonly localized to what locations on the body?

A

Medial thighs
Medial forelimbs

Ventral abdomen

  • easy to reach places
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6
Q

Therapy for psychogenic alopecia?

A

Behavior modifications

Feliway

Tricyclics antidepressant

  • alprazolam
  • amitirptyline
  • clomipramine
  • fluoxetine
  • paroxetine
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7
Q

Most common cause of allergic dermatitis in cats?

A

Flea bite dermatitis

—usually caudodorsal alopecia but can involve face, limbs, and neck

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8
Q

Atopic dermatitis is usually localized where on the cat ?

A

Medial thigh
Forelimb
Ventrum
Flank

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9
Q

Food allergic dermatitis is present all year round and can be found anywhere on the body but especially on the ??

A

Face and head

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10
Q

Ectoparasites found on cats?

Where is it localized?

A

Notoedres cati —feline scabies

Pinna, face, neck > forelimb > body

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11
Q

Clinical signs of feline scabies?

A

Alopecia, wrinkled skin, papular rash and crusts

Can also have peripheral lymphadenopathy

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12
Q

Diagnosis and treatment of feline scabies?

A

Diagnosis: skin scrapes

Treatment:

  • lime sulphur dip
  • ivermectin
  • selamectin
  • imidacloprid/moxidectin (advantage multi)
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13
Q

Demodex gatoi causes what lesions? What diagnostics would you do?

A

Alopecia, crust, scaling, and pruritus

Deep skin scrape

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14
Q

Treatment for demodex gatoi?

A

Lime sulphur dip/pump spray

Elizabethan collar to prevent consuming dip

NOT usually recommended in cats —> Imidacloprid/moxidectin (advantage multi), ivermectin selamectin, doramectin

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15
Q

Clinical signs of lynxacarus radovsky?

A

AKA fur mites

“Salt and pepper”
Mites in hair shaft

Hair epilate easily
Eggs stick to hairs

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16
Q

Diagnosis and treatment of fur mites ?

A

Acetate tape test

Pyrethrin spray, lime sulphur dip, fipronil spray, ivermectin (heartworm neg), selamectin, milbemycin

17
Q

Endocrine diseases causing symmetrical alopecia in cats?

A

Hyperthyroid

  • excessive grooming
  • hair tips are not chewed off

Hyperadrenocortisim

  • symmetrical truncal alopecia
  • hair epilates easily
  • skin is very fragile/thin
18
Q

What would you suspect as a top DDX if you have symmetrical alopecia on the ventrum and legs, a shiny appearance of the skin, hair epilates easily, with concurrent anorexia, and lethargy?

A

Pancreatic neoplasia

19
Q

What is miliary dermatitis?

A
Crusted papule 
Multifocal distraction (can be localized or generalized) 

Erythema, secondary alopecia, and exhortations often seen

20
Q

Causes of miliary dermatitis?

A

Flea allergic dermatitis

Adverse food reaction 
Atopy 
Parasite 
Dermatophytes 
Autoimmune disease 
Immune-mediated dz
Neoplasia 
Viral -herpes/FIV/FeLV 
Idiopathic
21
Q

What are the 3 presentations to eosinophilic granuloma complex?

A

Indolent ulcer

Eosinophilic plaque

Collagenolytic granuloma

Atypical eosinophilic granuloma (rare)

22
Q

What are possible etiologies of eosinophilic granuloma complex?

A

Flea bite
Atopy
Food

Infectious - ectoparasites/bacteria/ virus

Chronic trauma
Genetic predisposition

23
Q

How does an indolent ulcer appear?

A

Well-circumscribed, proliferative inflammatory lesion with dish shaped ulcer centrally

Usually on upper lip, can be uni or bilateral

Non painful and non pruritic

24
Q

How does an eosinophilic plaque appear?

A

Well circumscribed, reddish-yellow, ulcerated, edematous, intensely pruritic plaque

Inguinal region, medial thigh, and ventral abdomen

Raised and flat - can be ulcerated
Associated with allergic etiology

25
How does a collagenolytic granuloma/eosinophilic granuloma appear?
Well circumscribed, linear or raised nodular firm, yellow-pink lesions Linear granuloma, pharyngeal granuloma, or chin form Caudal aspect of the hindlimbs or abdomen Non painful and non pruritic
26
DDX for eosinophilic granuloma complex?
Neoplasia
27
Papular erosion, crusting and depigmentation of the skin over bridge of the nose, and ear pinnae Paws - hyperkeratoisis or ulceration Lymphadenopathy Dx?
Eosinophilic granuloma complex
28
Treatment for eosinophilic granuloma complex?
Parasitic control Medical therapy - glucocorticoids — prednisolone - cyclosporine A Once resolved — taper and withdrawal therapy
29
Comedowns on the chin and lower lip Papules and pustules Furunculosis and scaring DDx?
Feline acne —> idiopathic disorder of follicular keratinization Demodex Dermatophytosis Malassezia Eosinophilic granuloma complex
30
Treatment of feline acne?
Treat secondary infection - mupirocin Clip hair and clean area with human acne preparation - benzoyl peroxide Refractory cases - vit A
31
Nodules that open up and drain Draining tracts with serous to purulent fluid Dx?
Feline leprosy
32
Causes of feline leprosy?
Infectious —> nocardia, actinomyces, mycobacterium —> dermatomycosis ``` Non-infectious —>> panniculitis —> collagenolytic granuloma —> foreign bodies —> neoplasia ```
33
How do you diagnose and treat feline leprosy?
Full dermatological examination Skin biopsy — histopath and culture Treat underlying cause