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→Clinical Signs
===Clinical Signs===
===Clinical Signs===
[[Image:Feline Miliary Dermatitis.jpg|thumb|right|150px|Feline miliary dermatitis seoncdary to flea allergy, Wikimedia Commons 2006]]
In dogs, flea allergic dermatitis usually causes marked pruritus, although individual variation does exist. Lesions are most typically seen on the caudal dorsum, the inner and posterior thighs and the umbilical area
In dogs, flea allergic dermatitis usually causes marked pruritus, although individual variation does exist. Lesions are most typically seen on the caudal dorsum, the inner and posterior thighs and the umbilical area
, but any region may be affected. Within fifteen minutes of receiving a flea bite a papule appears and persits for up to 72 hours, when it forms a crust. However, these lesions may be difficult to appreciate due to the secondary changes that result from self-trauma in response to pruritus. These may include excoriations, erythema, seborrhoea, hyperpigmentation and lichenification. A mild secondary bacterial folliculitis may also be present.
, but any region may be affected. Within fifteen minutes of receiving a flea bite a papule appears and persits for up to 72 hours, when it forms a crust. However, these lesions may be difficult to appreciate due to the secondary changes that result from self-trauma in response to pruritus. These may include excoriations, erythema, seborrhoea, hyperpigmentation and lichenification. A mild secondary bacterial folliculitis may also be present.