Difference between revisions of "Flea Allergic Dermatitis"
Jump to navigation
Jump to search
| Line 46: | Line 46: | ||
**Oedema, [[Mast Cells|mast cells]], [[Basophils|basophils]], [[Eosinophils|eosinophils]], [[Lymphocytes|lymphocytes]], histiocytes | **Oedema, [[Mast Cells|mast cells]], [[Basophils|basophils]], [[Eosinophils|eosinophils]], [[Lymphocytes|lymphocytes]], histiocytes | ||
**Fibropruritic nodules covered by hyperplastic epidermis | **Fibropruritic nodules covered by hyperplastic epidermis | ||
| + | |||
| + | |||
| + | *Microscopically: | ||
| + | **Hyperplastic superficial | ||
| + | perivascular dermatitis | ||
| + | **Oedema, [[Mast Cells|mast cells]], | ||
| + | [[Basophils|basophils]], [[Eosinophils|eosinophils]], | ||
| + | [[Lymphocytes|lymphocytes]], histiocytes | ||
| + | **Fibropruritic nodules | ||
| + | covered by hyperplastic epidermis | ||
==Treatment== | ==Treatment== | ||
Revision as of 14:32, 4 August 2010
 |
This article is still under construction. |
| Also known as: | FAD, Flea Bite Hypersensitivity, FBH, Flea Dermatosis |
Description
- Occurs in cats and dogs mainly
- Irritation caused by enzymes, anticoagulants and histamine-like substances
- Hypersensitivity to flea saliva may develop
- Young or small animals may suffer from aneamia
- Lesions normally in dorsolumbosacral region, caudomedial thighs, ventral abdomen, flank, neck (cats)
- Grossly:
- Red papules and secondary excoriations
- Usually involves Type I reaction and Type IV reaction and cutaneous basophil hypersensitivity
- Mainly dorsolumbosacral area involved, abdomen, caudomedial thighs, flanks, neck of cats
- Secondary trauma is self-inflicted
- G
Signalment
Diagnosis
Clinical Signs
- Mainly
dorsolumbosacral area involved, abdomen, caudomedial thighs, flanks,
neck of cats
- Secondary trauma is self-inflicted
- Grossly:
- Papular
dermatitis
- Secondary excoriations
- Alopecic nodule if
chronic
Laboratory Tests
Radiography
Biopsy
Endoscopy
Pathology
Grossly:
- Papular dermatitis
- Secondary excoriations
- Alopecic nodule if chronic
- Microscopically:
- Hyperplastic superficial perivascular dermatitis
- Oedema, mast cells, basophils, eosinophils, lymphocytes, histiocytes
- Fibropruritic nodules covered by hyperplastic epidermis
- Microscopically:
- Hyperplastic superficial
perivascular dermatitis
- Oedema, mast cells,
basophils, eosinophils, lymphocytes, histiocytes
- Fibropruritic nodules
covered by hyperplastic epidermis