EQ Derm Flashcards
Which louse lives on the mane, tail, fetlock and pastern?
Haematopinus Asini (sucking)
Which louse lives on the dorsolateral trunk?
Werneckiela (biting)
What is the Tx for lice in horses?
Pyrethrins
What causes intense pruritis of the distal limb in draft breed horses?
Chorioptes Equi
Which zoonotic mite affects the whole of the horse?
Sarcoptes Scabiei.
Which mite causes headshaking in horses?
Psoroptes Equi
Name 2 topical Tx for mites.
Lime Sulphur
Diazinon
TREAT AT 2w intervals!!
Why are chickens a parasitic risk to horses?
Horses susceptible to Dermanyssus gallinae
Which commensal mite affects the eyelids and muzzle?
Demodex Caballi
Name 3 tick treatments in horses
Topical Pyrethrin
Fipronil
Ivermectin
Which nematode lives in the nuchal ligament of horses, and how is it treated?
Onchocerca Cervicalis
Ivermectin
Which nematodes are transmitted by flies to open wounds, causing exuberant granulation tissue with yellow granulea?
Habronemes
How should habronemiasis in the horse be treated?
Ivermectin and corticosteroids
Which parasite causes perianal pruritis?
Oxyuris Equi
A hypersensitivity to ___ causes a hypersensitivity reaction on the dorsal surface of the horse.
Culicoides spp
How should urticaria of the horse be treated?
Corticosteroids and antihistamines
What are the two presentations of viral papillomatosis and how are they treated?
Grass warts.
Pinnal acanthosis.
No Tx required
What causes rain scald?
Chronic moisture:
Dermatophilus congolensis
Which 2 bacteria are responsible for bacterial folliculitis in horses?
Staph and Strep
What are the 2 main causes of ringworm in horses?
Trichophyton
Microsporum
What lesions do you see with ringworm and how is it treated?
YOUNG. circles with cigarette ash.
Topical antifungal - natamycin, miconazole.
How is photosensitization treated?
Treat liver Dz.
Remove agent.
Which areas of the body are prone to leukocytoclastic vasculitis?
non-pigmented areas on the distal limb
What is the cause of pastern dermatitis?
Chronic wetting of skin on distal limb.
Which autoimmune condition causes severe crusting?
Pemphigus foliaceous
How are eosinophilic granulomas treated?
Surgical Removal
Which locations are most commonly associated with melanoma?
perineum, tail head, parotid region
In which animals are SCCs common and where?
Poorly pigmented
Eyes and external genitalia
What are the 3 treatment options for SCC?
Surgical Excision, Cryotherapy, Chemotherapy.
