45. allergodermatitis Flashcards Preview

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Flashcards in 45. allergodermatitis Deck (10)
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1
Q

list the types of allergodermatitis

A
urticaria 
angioedema
food hypersensitivity 
contact hypersensitivity 
drug eruption 
intestinal parasitic hypersensitivity 
hormonal 
flea bite hypersensitivity
2
Q

ddx of pruritus / steps of examination

A
  1. history
  2. physical exam
  3. skin scrape
  4. +/- blood (sarcoptes serology, microfilaria)
  5. diagnosis ex juvantibus
  6. elimination
  7. allergy test
  8. skin biopsy
3
Q

urticaria

A

uncommon, dog, cat, type 1, 3 hypersensitivity
cause: drug, vaccine, bug bite
acute onset, wheals, variable pruritus
treat: corticosteroid, antihistamines

4
Q

angioedema

A

dog, cat, type 1 hypersensitivity
bee, wasp sting
extreme swelling of face, head or feet
epinephrine

5
Q

food hypersensitivity

A
dog, cat, type 1, 2, 4 
diet - fish, beef, chicken...
dog: pruritus, seborrhea, urticaria
cat: pruritus, milliard dermatitis 
Diag: elimination, provocation
treat: eliminate allergen
6
Q

contact hypersensitivity

A

dog, cat, uncommon, type 4
allergens: pollen, soap, ointment, rubber etc
elimination and provocation
remove allergen

7
Q

drug eruption

A

rare, dog, cat
can occur with new drug or after long treatment
discontinue drug

8
Q

intestinal parasite hypersensitivity

A

uncommon, dog, cat
pruritic crusting, papule, seborrhea
eliminate parasites

9
Q

hormonal hypersensitivity

A
rare, dog, intact bitch 
pruritic, papulocrusts on thigh, genital and perineal regions, symmetric 
enlarged nipples, vulva 
Diagnosis by treat: hormone therapy 
treat. neuter
10
Q

flea bite hypersensitivity

A

dog, comon, type 1, 4
miliary dermatitis
flea control

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