Efficacy of APOQUEL® for the Control of Otitis Externa Secondary to Allergic Skin Disease in Client-Owned Dogs

Otitis externa, an inflammation of the skin of the external ear canal, is a common problem in domestic dogs. Clinical signs of otitis externa include erythema, edema, pain, odor, pruritus, head shaking and excoriations [1, 2]. The prevalence of otitis externa has been estimated to be between 7.3 and 10.2% of cases presenting to veterinary clinics [3-6]. Primary triggers for otitis externa in dogs include atopic dermatitis, food allergy, parasites and foreign bodies, while predisposing factors include conformation of the ear, lifestyle factors causing excessive moisture in the ear canal and inappropriate treatment [7, 8]. In a retrospective study that evaluated primary causative factors for otitis externa in patients presented to a veterinary school, allergic dermatitis was the most common primary factor and was observed in 43% of the otitis externa cases evaluated [9]. A similar study found that 60% of dogs presenting with atopic dermatitis had otitis externa [10]. Bacterial infections associated with otitis externa are generally Abstract

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