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86 Cards in this Set
- Front
- Back
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True/Flase. Dermatophytes attack the follicle but spare the bulb.
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True.
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True/False. Microsporum canis is a normal skin inhabitant in dogs and cats.
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False. Not in cats.
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Which population of animals is microsporum persicolor found?
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Hunting animals.
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Which dermatophyte causes onyxis/perionyxis of the nail bed?
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M. gypseum
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What is one flag that a dermatoses is ringworm in the cat (and dog)?
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no lesions on the nose (no follicles)
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True/False. The most common cause of folliculitis in the dog is fungal.
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False. Bacterial > fungal. Never treat fungal folliculitis empirically.
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Animal presents with moderate pruritis and alopecia with crusts. You pluck a hair from the periphery of a lesion and it is swollen, frayed and irregular under the microscope. What other tests do you want to run?
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Wood's lamp exam
Culture on Sabouraud's or dermatophyte test medium histopath from edges of alopecic lesion |
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You culture a suspected dermatophytosis and find spindle-shaped macroconidia with a knob at the terminal end.
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Microsporum canis
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You culture a suspected dermatophytosis and find cigar-shaped, smooth walled spores.
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Thichophyton
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What is an appropriate treatment for ringworm in kittens and pregnant cats?
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Chlorhexidine shampoo
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What systemic treatment for ringworm is treatement of choice for cats?
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Itraconazole
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What are contraindications for griseofulvin for systemic treatment of ringworm
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< 6 weeks old or pregnant females
FeLV or FIV BM suppression in Persians |
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What would be an indication to use fluconazole for systemic treatment of ringworm?
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concurrent liver disease
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True/False. Vaccines are available for the prevention of microsporum canis.
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False. Can limit severity of infection.
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What is a key to prevention of ringworm in catteries?
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Ectoparasite control- act as mechanical vectors.
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Should you treat cats that have been exposed to ringworm but culture negative?
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Yes, topically.
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Malassezia has a symbiotic relationship with what bacterial skin condition
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Staph pyoderma
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Malassezia can induce a type I hypersensitivity reaction in what patients?
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atopic dogs
seborrheic dermatitis |
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Reddish brown staining of claws is caused by what organism?
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Malassezia paronychia
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Westie presents with thickened folds on legs and trunk, hyperpigmentation, alopecia.
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Hyperplastic dermatosis, triggered by Malassezia
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Topical treatment of choice for yeast dermatosis?
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chlorhex + climbazole
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Which antifungal might be most useful for hyperplastic dermatosis in Westies?
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ketoconazole- regulates keratinization
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True/False. The following drugs can be used effectively to treat Malassezia: ketoconazole, itraconazole, fluconazole, terbinafine.
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True. Griseofulvin is NOT effective.
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True/False. Candida is a commensal organism of the normal skin.
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False. Commensal of the GI tract, considered pathologic if found elsewhere.
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How does Candida infection present in the dog? cat?
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dog- ulcer with whitish coat, erythematous borders
cat- anal and pododermatitis |
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Which organism is the only one to grow within 2-4 hours in the serum filtration test?
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Candida
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Which antifungal crosses the BBB?
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Fluconazole
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What systemic antifungal is the gold standard for deep mycoses?
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Amphotericin B
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True/False. Cryptococcus gatii is found in USA and Europe.
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False. Neoformans
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True/False. Sporothrix is a severe zoonotic that is spread by direct inoculation to people.
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False. Simple contact in humans.
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What is the treatment for sporothrix?
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supersaturated sodium iodide
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A cat who is allowed outside to wander presents with a bite wound abscess that won't resolve. What are you thinking of? Should you put on gloves?
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Yes! Consider sporothrix.
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What is the most important diagnostic tool for autoimmune skin disease?
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Skin biopsy
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What type of lesion is the hallmark of autoimmune skin disease?
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Acantholysis
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Which autoimmune disorder of the skin has classic tombstoning appearance on histo?
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Pemphigus vulgaris
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Which autoimmune disorder(s) of the skin affect the footpads?
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Pemphigus foliaceus
bullous pemphigoid (discoid lupus) |
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Which autoimmune disorders of the skin are accompanied by systemic signs?
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SLE
Erythema multiforme Toxic Epidermal Necrolysis |
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Which autoimmune disorder is characterized by full thickness coagulation necrsois of the epidermis and hydropic degenation of basal epidermal cells?
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Toxic Epidermal Necolysis
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When is pulse therapy of glucocorticoids used?
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Induction and for acute flare ups of autoimmune disorders
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Side effects of azathiorpine used in autoimmune disorders?
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BM suppression
GI signs pancreatitis, hepatotoxicity, alopecia Contraindicated in cats |
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Side effects of cyclosporine?
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gingival hyperplasia
BM suppression idiosyncratic hepatotoxicity papillomatosis |
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Which topical is used for treatment of discoid lupus in dogs?
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Tacrolimus
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Non pruritic, non alopecic nodules along dorsal midline of the horse.
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Dermoid cysts.
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A foal is born with no skin or epidermis over appendages
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aplasia cutis
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Vitiligo
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depigmentation of muzzle, lips, periorbital areas
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A white horse born with no GI activity.
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Overo Lethal white
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True/False. Intradermal allergy testing in horses requires 24 hour monitoring, and should be done at a hospital.
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True.
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Treatment for atopy in horses?
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antihistamines
Fatty acids immunotherapy, corticosteroids questionable |
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Where are food allergy reactions most likely to show up on a horse?
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lateral caudal thorax and flank
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Horse presernts in summer iwth papules on the ventrum, shows alopecia, and "rat tail".
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Insect hypersensitivity
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True/False. Pemphigus presenting in a younger horse is more severe and less likely to regress.
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False.
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Signs of pemphigus in the horse.
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vesicule or pustule at mucocutaneous junction
pruritis edema stiff gait systemic signs |
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Treatment for pemphigus in the horse?
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corticosteroids
pentoxyfyllin chemotherapeutic agents |
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What is the most common skin tumor in the horse?
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Sarcoids
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True/False. If you suspect a sarcoid, you should pick at it or put something on it.
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No!
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Which neoplasm looks like "proud flesh"?
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fibroblastic sarcoid
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Which is better for diagnosing a sarcoid: visual exam or histopathology?
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Visual exam is less risky.
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Treatment for sarcoids?
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ligation (pedunculated verrucous)
surgical excision- verrucous, occult excision + cisplatin- fibroblastic, mixed, malignant laser- high success radiation topical |
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What is the second most common cutaneous tumor of the horse?
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SCC
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Which cutaneous tumor in the horse is foul smelling?
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SCC
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Treatment for SCC in the horse?
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Debulk + cryo or cisplatin
5-FU topical radiation bloodroot extract intratumor hyperthermia |
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Treatment for SCC?
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excision
cryosurgery intralesional cisplatin cimetidine |
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True/False. Melanoma is locally invasive but rarely metastasizes
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True
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Which cutaneous has a vaccine?
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Melanoma
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Which dermatoses in the horse have scabs with hair in them?
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Staph folliculitis
Dermatophilosis (rain scald) |
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Which 2 bacterial dermatoses in the equine result from poor husbandry/grooming?
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Corynebacterial folliculitis
Pastern Dermatitis |
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Pink, cobblestone mass on 3rd eyelid of cow.
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Squamous cell carcinoma
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Cow with spinal cord signs or bloat. Swellings on the back.
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Hypodermiasis (Warble grubs)
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you diagnose a cow with hypodermiasis from skin nodules on the back. Should you deworm?
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NO!
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Tail mange in cows.
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Chorioptic
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True/False. Sarcoptic and psoroptic mange are reportable in cows.
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True.
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Cochliomyia hominovrax
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true screwworm
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Sheep with pruritis, stained fleece, anemia and nodules.
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Sheep ked
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Sheep with vesicles and crusts on lips, udders, coronary bands.
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Orf
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Pig with black crusts and vesiculopustual eruptions around head and coronary bands
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Staphylococcus hyicus (greasy pig disease)
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What is the most important skin disease of swine worldwide?
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Sarcoptic mange
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Pig with hyperkeratotic lesions in ears.
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Sarcoptic mange
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White pigs, 3 weeks old with craters with erythematous ring.
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Juvenile pustular psoriasiform dermatitis. Self-resolving.
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Feeder pigs with black crusting of skin with deep fissures.
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Parakeratosis due to zince deficiency
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Small pink cauliflower swellings with crust, hooves with lines parallel to coronary band in pig. Prognosis?
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Dermatosis vegetans. Death.
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Onchocerciasis in cattle
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crusty plaques
alopecia uveitis, keratitis |
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Endocrinopathy with red white and blue histopath lesion.
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Hepatocutaneous syndrome (superficial necrolytic migratory erythema)
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Feline dermatosis with flame figures on histopath
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Eosinophilic granuloma
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WHich histiocytic patterns are reactive?
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Cutaneous histiocytoma
Systemic histiocytosis |
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mycosis fungoides
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epitheliotrophic lymphosarcoma
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Which feline eosinophilic dermatosis is accompanied by fever?
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Eosinophilic plaques
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