Reasons a dog may become itchy and start scratching

Itching and scratching in dogs may have many causes.

Scratching and excessive hair loss is one of the most common reasons dogs are presented to a veterinarian. There are many different reasons a dog may become itchy.

Allergies most common reason for scratching in dogs

Allergies to various objects are probably the most common reasons a dog will start scratching. Instead of affecting the respiratory system of a dog, allergies usually work on the skin and make the dog itchy.

Dogs can be allergic to just about anything they contact. Fleas are the most common allergy seen in dogs and a frequent battle for many dog owners. However, food allergies and atopy (an allergy to something inhaled or contacted by the dog) are also common causes.

Skin infections can also cause dogs to become itchy

Skin infections involving either yeast or bacteria are also common causes of scratching for dogs. Skin infections rarely occur by themselves though. These infections are usually secondary and caused by damage to the skin caused by an allergy, parasite or other cause.

Treating and controlling the skin infection can quickly cause a reduction in the amount of itchiness a dog experiences. However, if the underlying cause is not controlled, the skin infection is likely to return once treatment is discontinued.

Ear infections can make dogs itchy

Ear infections are another common cause of scratching. Ear infections can be seen as the sole problem or may be part of an underlying allergy. Sometimes, itchy ears are the start of a bigger problem which can progress to widespread skin disease if not addressed.

Ringworm, mites and other causes of itching in the dog

Ringworm is a fungal disease which can make a dog very itchy and cause hair loss in affected animals. Ringworm is also a contagious disease and can be passed from pets to people or from people to pets.

Mites are the cause of mange and there are many different types of mange which can affect a dog. Demodectic mange is the most commonly diagnosed although these dogs are often not extremely itchy. Sarcoptic mange, however, tends to cause severe itchiness and is also transmissible to people.

There are many factors which may cause dogs to become itchy and start scratching. While various allergic causes are the most common causes, there are other agents and diseases which can make a dog itchy.