Dermatology

Question 1

When is it normal to see a bilateral symmetrical alopecia of the tail/perianal area in ferrets?

Answer 1

During the breeding season (March-Aug in N hemisphere)

Question 2

What disease can cause sudden onset crusting and erythema on ventral inguinal area of ferrets and well-demarcated alopecia, erythema, scaling and lichenification of front/rear limbs and ventral region in guinea pigs?

Answer 2

Epitheliotropic lymphoma

Question 3

What parasitic infestation causes intense pruritus (may visually appear as a seizure), alopecia, crusts, etc in guinea pigs?

Answer 3

Trixacarus caviae infestation

Question 4

What mite causes severe crusting, lichenification and quill loss in African hedgehogs?

Answer 4

Caparina tripillis

Question 5

In what 2 ECM species are neoplastic skin lesions uncommon?

Answer 5

Chinchillas and degus

Question 6

A rabbit with skin nodules on the head and genital area, with ocular edema and blepharoconjunctivitis is likely suffering from what disease process?

Answer 6

Myxomatosis

Question 7

Describe the appearance and most common locations of Shope fibroma lesions vs Shope papilloma lesions

Answer 7

Fibromatosis: soft tissue swellings around the head, limbs, perianal regions
Papillomatosis: horn-like lesions around ears, eyelids, neck, shoulders

Question 8

What common tumor in guinea pigs causes large solitary masses along the back and flanks that rupture and exude a sebaceous exudate

Answer 8

Trichofolliculoma

Question 9

What can be added to trichograms to aid in identification of fungal arthrospores or hyphae?

Answer 9

Potassium hydroxide 10% or lactophenol cotton blue

Question 10

What is the fastest way to distinguish normal broken hairs from barbering from abnormal hair caused by follicular dysplasia or infectious agents?

Answer 10

Trichogram