An allergic nasal discharge occurs in dogs with canine atopy. Signs are the abrupt onset of sneezing with a clear nasal discharge. Itching around the eyes may cause the dog to rub his face on the carpet or furniture. With repeated exposure to different allergens, the allergic response becomes a year-round problem.
Treatment: An episode of allergic rhinitis responds well to an antihistamine such as Benadryl. Definitive treatment is directed toward the underlying atopy.