Feline cutaneous reaction patterns

Question 1

Self-induced symmetrical alopecia.

Differentials.

Answer 1

Pruritic - parasitic/ bacteria

Behavioural - anxiety, pain (musculoskeletal)

Question 2

Spontaneous symmetrical alopecia.

Differentials.

Answer 2

Demodex cati

Infectious - dermatophytosis

Endocrine

Neoplastic

Question 3

A cat is presented to you with linear areas of alopecia of the caudal thigh. A trichogram reveals fractured hairs.

Would you expect the alopecia to be spontaneous or self-induced?

Answer 3

Self-induced

Question 4

A cat is presented with self-traumatic wounds to the head and neck. Further to this there are crusts erosions and ulceration of the skin.

What would be your differentials?

Answer 4

Parasites - otodectes, neotrombiculata

Infectious - malassezia or bacterial

Miscellaneous - bahavioural, pain, contact dermatitis

Question 5

Describe a miliary pattern of dermatitis.

Answer 5

Small multifocal papular crusts, erythrematous and dry

Question 6

What differentials would be suspected of a cat with miliary dermatitis?

Answer 6

Parasitic - cheyletiella, lice, otodectes

Microbial - bacterial, dermatophytosis

Misc

Question 7

What are the different types of eosinophilic skin disease in the cat?

Answer 7

Plaque

Granuloma

Ulcer

Question 8

Describe this lesion

Answer 8

The inguinal inner thigh shows focal alopecia with erythema and erosions.

Eosinophilic granuloma complex

Question 9

What is shown here?

Answer 9

Eosinophilic indolent ulcer

Well demarcated red/brown ulcer w/ raised border (variable severity between cases)