Changes

===Clinical Signs===

===Clinical Signs===

Signs may be related to season, but with time can come to be seen year-round. Pruritus may be the only complaint, and is present in all cases of atopic dermatitis. Animals self-traumatise due to pruritus, which gives rise to lesions which include lopecia, erythema, scaling, salivary staining, hemorrhagic crusts, excoriations, lichenification, and hyperpigmentation.The feet, face, ears, flexural surfaces of the front legs, axillae, and abdomen are the most frequently affected areas. Lesions develop secondary to self-trauma and include a Superficial staphylococcal pyoderma, Malassezia  dermatitis, and allergic otitis externa with secondary infections are common complications. Chronic or recurrent otitis is the only complaint in a small number of animals.

Signs are often, but not always seasonal. Pruritus is the key feature of atopic dermatitis and may be the only complaint. This gives rise to self-trauma, causing lesions. opecia, erythema, scaling, salivary staining, hemorrhagic crusts, excoriations, lichenification, and hyperpigmentation.The feet, face, ears, flexural surfaces of the front legs, axillae, and abdomen are the most frequently affected areas. Lesions develop secondary to self-trauma and include a Superficial staphylococcal pyoderma, Malassezia  dermatitis, and allergic otitis externa with secondary infections are common complications. Chronic or recurrent otitis is the only complaint in a small number of animals.

===Laboratory Tests===

===Laboratory Tests===