Dermatology

Zoonotic derm diseases

-dermatophilus (human infection is rare tho)

-ORF

-dermatophytosis

-sarcoptic mange

Reportable derm diseases

-psoroptes in sheep

What are the big 7?

1. Dermatophilus (rain rot/lumpy wool)

2. Papilloma (warts)

3. Contageous ecthyma (orf)

4. Dermatophytosis (ringworm)

5. Mange (mites)

6. Pediculosis (lice)

7. Squamous cell carcinoma (cancer eye)

+1 zinc responsive dermatitis

Dermatophilus transmission

Chronic carrier animals release spores when it is wet outside and then flies and fomites transmit mechanically

Dematophilus clinical signs

-lesion on dorsum, lower limbs

-linear run off scald lines

-thick crusts under matted hair

-pink, red granulation bed like a strawberry

Dermathophilus diagnostics

Parallel rows of cocci on impression smear

Dermatophilus treatment

-remove crusts

-wash with iodine

-systemic oxytetracycline

Papillomatosis

More common in cattle and caused by BPV mostly in younger animals

Papillomatosis treatment and control

-crush or pinch off, cryotherapy, surgical resection

-vaccination

Contagious ecthyma

Crusting and proliferative lesions of mucocutaneous junction

Contagious ecthyma treatment

Self limiting, supportive care

Malignant orf

Severe, progressive, unresponsive to treatment

Dermatophytosis types

Microsporum in pigs and llama

Tricophyton in cattle > goats

What animals are most susceptible to dermatophytosis

Youngins

Dermatophytosis clinical signs

circular alopecia with gray/white crusts frequently seen around the eyes

You CANNOT write a health paper for an animal with

Any contagious disease

Dermatophytosis treatment

Usually self limiting, sunlight, lime sulfur, dilute bleach

Which mites need superficial vs deep scrape?

Psoroptic and chorioptic can do superficial. Sarcoptic need deep.

Are the mites host specific?

Usually except for sarcoptes and psorptes

What else do you need to treat in a sheep with psoroptes?

The environment cause they can live for a long time

Chorioptic mange treatment

Pour on, DO NOT USE FRONTLINE IN FOOD ANIMALS

Lice are associated with

Winter and confinement

Animals with lice are really really

Itchy

Lice treatment

Must retreat in two weeks after first because most products don't kill eggs

Most common bovine ocular tumor

SCC

Zinc responsive dermatitis

-not often herd level, few individuals

-young camelids

What time of year do chorioptes come out

Late winter