Canine atopic dermatitis is an allergic skin condition in dogs that causes itching, which can lead to redness, fur-loss, rough or damaged skin. Symptoms of cAD include itchy skin, which may or may not look red or inflamed, and in severe cases the dogs affected skin may become damaged from scratching, become rough or scaly, and they may lose their fur in that area. In addition to scratching, itchy skin can cause dog to repeatedly lick the affected areas, which can cause the skin to darken in colour or become red and raw, or they may rub the affected areas. A dog with canine atopic dermatitis showing a red and itchy facial muzzle, with no fur loss or damaged skin. The skin between the toes is red, inflamed and broken from repeated licking. Often, the location of the signs, such as itching, rubbing, redness, can be very a very useful pointer towards identifying the correct disease, it's also important to note the areas affected, and where your dog scratches, rubs or licks.