Symmetric Hair Loss in Dogs

Identification

• Hair loss in dogs can often be difficult to diagnose and treat. It may be necessary for a veterinarian to perform diagnostic tests to determine the cause of symmetrical hair loss in your dog. Hair loss can be caused by rare conditions or genetics, or can be related to the geographical area in which you live.

Castration responsive dermatosis

• This condition is most common among younger dogs that are not neutered. It may occur more often in certain breeds of dogs such as chows, Samoyeds, keeshonden, Alaskan malamutes, miniature poodles and Pomeranians. This condition causes symmetrical hair loss in the neck and genital areas, dark scaly skin, faded coat color, and a coat that is fine like a "puppy coat." Treatment consists of neutering the dog, which causes the symptoms to subside.

Cyclic alopecia

• Cyclic alopecia is a condition in which the hair simply stops growing at certain times of the year. This may result in symmetrical hair loss with definite borders and on the back and flanks, and darkening of the skin. There is no known treatment for this disorder.

Pregnancy and illness

• Dogs that are pregnant can experience hair loss due to stress and hormonal changes. Illness and surgery are other things that may cause sudden hair loss in dogs. Your veterinarian will check for any underlying medical conditions that may cause hair loss. If none are found, the dog's hair will usually grow back.

Considerations

• Hair loss in dogs can be a sign of a more serious medical condition or a simple allergy to a substance in the home. Consult your veterinarian if your dog experiences hair loss in order to obtain a correct diagnosis.