Difference between revisions of "Flea Allergic Dermatitis"
Jump to navigation
Jump to search
Line 47: | Line 47: | ||
===Endoscopy=== | ===Endoscopy=== | ||
===Pathology=== | ===Pathology=== | ||
+ | Grossly: | ||
+ | **Papular dermatitis | ||
+ | **Secondary excoriations | ||
+ | **Alopecic nodule if chronic | ||
+ | *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== | ||
==Prognosis== | ==Prognosis== |
Revision as of 14:31, 4 August 2010
![]() |
This article is still under construction. |
Also known as: | FAD, Flea Bite Hypersensitivity, FBH, Flea Dermatosis |
Description
- Usually involves [[Skin Immunologic - Pathology#Type I
reactions|Type I reaction]] and [[Skin Immunologic - Pathology#Type IV reactions|Type IV reaction]] and cutaneous basophil hypersensitivity
- 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
- Microscopically:
- Hyperplastic superficial
perivascular dermatitis
- Oedema, mast cells,
basophils, eosinophils, lymphocytes, histiocytes
- Fibropruritic nodules
covered by hyperplastic epidermis
- 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
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