Lecture 1

Question 1

3 basic diagnostics for derm

Answer 1

Scrape, culture, and biopsy

Question 2

species affected by pemphigus foliceus

Answer 2

goats

Question 3

what hypersensitivity is phemphigus foliaceus

Answer 3

type II

Question 4

target tissue of pemphigus foliaceus

Answer 4

keratinocytes

Question 5

diagnosis of pemphigus foliaceus

Answer 5

biopsy

Question 6

urticaria

Answer 6

wheals, swellings of the skins, dermal edema

Question 7

angioedema

Answer 7

diffuse edema

Question 8

some causes of dermal edema

Answer 8

penicillin, drugs

Question 9

treatment of urticaria

Answer 9

corticosteroids, antihistamines

Question 10

contact dermatitis causes

Answer 10

irritation and allergy; usually iatrogenic

Question 11

presentation of contact dermatitis

Answer 11

usually the front half of the body (more robust immune response)

Question 12

treatment for contact dermatitis;

Answer 12

remove source, symptomatic

Question 13

dermatophilosis

Answer 13

aka streptotriciosis, rain scald, rain rot, lumpy wool, strawberry footrot, dew poisoning

Question 14

etiologic agent of dermatophilosis

Answer 14

dermatophilus congolensis, a bacterial infection NOT dermatophytosis (fungal)

Question 15

epidemiology of dermatophilosis

Answer 15

affects most domestic animals worldwide when there is high moisture/water conditions

Question 16

risk factors of dermatophilosis

Answer 16

humid weather, warm or cool; prolonged rainy seasons with frequent spraying or dipping; crowded conditions; uncontrolled flies

Question 17

breed more at risk for dermatophilosis

Answer 17

merino

Question 18

source of D. congolensis

Answer 18

suspected to live in the soil; chronic carriers can spread the animal but persists in crusts (in environment for 3.5 years

Question 19

layer d. congolensis must reside in

Answer 19

stratum corneum

Question 20

dermatophilosis cattle consequences

Answer 20

decreased population, hide damage, epizootic death

Question 21

dermatophilsosis sheep

Answer 21

decreesed fleece; interferes with shearing, death

Question 22

clinical signs of dermatophilsosis

Answer 22

neck, topline, udder, limbs, ventrum where water will gather; thick hornlike brown crusts - organisms found in impression smears; very painful

Question 23

dermatophilosis

Answer 23

initially lesions will be noticed on wooless areas of face, legs and scrotum (difficult see under wool)

Question 24

diagnosis of dermatophilosis

Answer 24

scrape is choice

Question 25

treatment of dermatophilosis

Answer 25

remove predisposing factors by mitigatng moisture and reducing extrnal parasites antibiotics (single high dose) treated prior to sheering

Question 26

treatment of largescale dermatophilosis

Answer 26

chlorohex sprays, providone iodine sprays

Question 27

strawberry footrot

Answer 27

ovline proliferative dermatitis

Question 28

clinical signs of strawberry footrot

Answer 28

lower leg (coronet to stifle); bloody flesh scabs with warty apperearance

Question 29

treatment of strawberry footrot

Answer 29

same as dermatophilosis; prevention is mostly quarantine

Question 30

folliculitis

Answer 30

inflammation of the hair follicles

Question 31

furunculosis

Answer 31

severe inflammation of the follicles (ruptured follicles, aka boils)

Question 32

impetigo

Answer 32

infectioncausing subcorneal pustules but not follicles

Question 33

etiology of foliculitis, furunculosis, and impetigo

Answer 33

coag positive staph (aureus, pseuderintmedius)

Question 34

diagnosis of foliculitis and furunculosis

Answer 34

culture, bx

Question 35

is MRSA a concern with skin infections?

Answer 35

not a ton

Question 36

foliculitis occurs mroe with what species?

Answer 36

sheep, goats

Question 37

impetigo tends to occur with what species

Answer 37

cattle