Losing Hair on Her Back in Dogs

Hair loss in dogs is a common complaint, especially on the back. Some breeds of dog are more susceptible than others such as Greyhounds, Terriers, Whippets, Chihuahuas, and Boxers. Females are also more often affected by hair loss. Some of the most common causes of hair loss on the back are:

• Skin disorder
• Psychological problem
• Infections
• Parasites or mites
• Allergy
• Trauma
• Medical disorder
• Certain drugs

Hair loss does not always indicate a problem. In fact, almost all dogs shed, especially during the summer months. However, if your dog has unexplained hair loss with other symptoms such as redness, itching, lesions, fever, or pain, it is a good idea to see your veterinary care provider.

Skin Disorder

There are many skin disorders that can cause your dog to lose hair on her back. Some of the most common include dry skin and dermatitis.

Psychological Issues

If your dog is suffering from depression or anxiety, she may be excessively grooming or licking, which creates hair loss. Stress can also cause hair loss.

Infections

Certain infections that may cause your dog to lose hair on her back include bacterial, fungal, and yeast. If the hair loss is accompanied by hot spots or pus, she probably has an infection.

Parasites or Mites

There are many types of parasites and mites that can cause hair loss on the back. Examples are mange (from mites), fleas, ringworm, chiggers, and mosquitos.

Allergy

Another cause of hair loss is an allergic reaction to food, medication, shampoo, or just about anything. This usually includes itching and possibly redness as well.  

Trauma

Some forms of trauma such as a laceration or abrasion from an accident can create a patch of hair loss on the back. Also, when dogs are injured they sometimes lick the area, which can cause hair loss.

Certain Drugs

Some of the most common drugs that cause hair loss on the back of dogs include chemotherapy, certain vaccinations, and prednisone.  

Medical Disorder

There are some medical disorders that can cause hair loss on your dog’s back such as:

• Alopecia is a skin disorder which can be caused by many things such as stress, genetics, hair clipping, and sometimes it can be an autoimmune problem
• Diabetes can cause baldness in some dogs; if your dog has also been urinating and drinking more than usual, you should get her checked for diabetes
• Hypothyroidism can cause hair loss (affects mostly Terriers, Boxers, Retrievers, Spaniels, Setters, Doberman Pinschers, Greyhounds, Dachshunds, and Schnauzers)
• Hormone imbalances can cause hair loss in some dogs
• Skin cancer is a rare cause of baldness, but you should get her checked out if she is also losing weight or has nodules or changes in skin color