(09) - Equine Atopic Dermatitis

Question 1

1. Atopy has been diagnosed in horses; however, there is still a lot to learn about this disease in
   horses.
2. Pruritus can be seasonal or year-round
3. Pruritus and secondary lesions of alopecia, excoriation, lichenification, and hyperpigmentation
   may be present on the face, ears, ventrum and legs.

Answer 1

d

Question 2

1. Clinical signs can mimic what?
2. Diagnosis is based on history, clinical signs and exclusion of other pruritic dermatoses.
3. False positive and false negative results can occur with the intradermal testing; therefore, this
   test is not be used to conform the diagnosis of atopic dermatitis but, mainly to do what?
4. The value of RAST or ELISA in accurately identifying the relevant allergens in equine atopy is
   not known at the present time.

Answer 2

1. insect hypersensitivity.
2. select allergens
   for the allergen-specific immunotherapy.

Question 3

1. Treatment includes one or more of the following: avoidance (often impractical);
   hyposensitization therapy based on the intradermal test results; corticosteroids and
   antihistamines which can be used as the sole therapy or in association with allergen-specific
   immunotherapy to improve response
2. Explain to the owner that this disease is inherited and it can not be cured but only controlled with continuous or intermittent uses of medications.

Answer 3

d