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Skin lesions are seen most commonly in non-pigmented areas at the palmar or plantar aspect of the pastern. Hindlimbs are most commonly affected and lesions are often symmetrical. The dermatitis is initially characterised by erythema, alopecia, exudation, pruritus and crusting of the lower limb. Lameness may occasionally be a feature of the condition. In chronic cases, thickening of the skin occurs with hyperkeratosis and fissure formation.
Skin lesions are seen most commonly in non-pigmented areas at the palmar or plantar aspect of the pastern. Hindlimbs are most commonly affected and lesions are often symmetrical. The dermatitis is initially characterised by erythema, alopecia, exudation, pruritus and crusting of the lower limb. Lameness may occasionally be a feature of the condition. In chronic cases, thickening of the skin occurs with hyperkeratosis and fissure formation.
==Diagnosis==
The list of differential diagnoses for this condition is lengthy and several important conditions should be ruled out. If lesions are restricted to non-pigmented skin only, liver enzymes and bile acids should be evaluated in order to rule out photosensitisation as a cause of disease. Skin scrapes should be performed in order to rule out parasites such as Chorioptes mites (especially in heavily-feathered horses).
[[Category:Dermatological_Disorders_-_Horse]][[Category:To_Do_-_SophieIgnarski]]
[[Category:Dermatological_Disorders_-_Horse]][[Category:To_Do_-_SophieIgnarski]]