Skin 3

Question 1

grooming w a stiff brush —> microscope is good for

Answer 1

chorioptes

Question 2

skin scrapes can look for

Answer 2

fungal and parasitic

Question 3

why has PCR replaced fungal culture

Answer 3

faster

Question 4

do you prep skin for punch biopsy

Answer 4

no

Question 5

tests for allergen

Answer 5

blood IgE
intradermal skin test

Question 6

causes of pruritis

Answer 6

pediculosis (lice)
chorioptes
harvest mite
pinworm
sweet itch (culicoides)
atopy

Question 7

lice tx

Answer 7

synthetic pyrethroids 2 at 2 wk interval

Question 8

chorioptes tx

Answer 8

clip hair

ivermectin
permethrin

Question 9

what is atopy? how to dx? tx?

Answer 9

type 1 hypersensitivity causes extreme pruriritis

dx- exclusion

tx - steroids

Question 10

causes of alopecia

Answer 10

-dermatophilus congolensis (rain scald)
-ringworm (dermatophitosis)
-occult sarcoid
-Multicentric Epitheliotrophic eosinophilic Disease (MEED)

Question 11

what is rain scald

Answer 11

bacterial infection

causes crusting and scabbing and paintbrush lesions

Question 12

tx for ringworm

Answer 12

imaverol
tx environment, brushes

Question 13

signs of MEED

Answer 13

pruritis
alopecia
GIT/systemic signs

Question 14

what might cause nodules

Answer 14

-Insect bites
-Uticaria (immune mediated response to allergens)
-Papillomatosis/Aural Plaques
-Sarcoids
-Melanoma
-Cutaneous Lymphosarcoma
-Eosinophilic collagen necrosis

Question 15

Papillomatosis vs Aural Plaques

Answer 15

same virus
aural plaques don’t go away

Question 16

what do you do for eosinophilic collagen necrosis

Answer 16

nothing, leave alone

Question 17

cause of papules/pustules

Answer 17

-Staph folliculitis
–> check under rug

Question 18

causes of crusting

Answer 18

-Pemphigus Folleacous
-Sunburn
-Photosensitization

Question 19

what is leucoderma

Answer 19

skin loses pigment

Question 20

what is leucotrichia

Answer 20

white hair (branding, bandaging)

Question 21

what can cause pastern dermatitis? (pastern = between hoof and fetlock) what is another name for it?

Answer 21

chorioptes, photosensitization

mud fever

Question 22

what is pastern leucocytoclastic vasculitis. tx?

Answer 22

rash on skin (UV light).
can be higher up than mud fever
tx = steroids

Question 23

causes of limb swelling

Answer 23

-Ulcerative lympangitis
-Cellulitis
-Vasculitis

Question 24

tx for cellulitis

Answer 24

NSAIDs and AB