Hair Loss in Dogs

Dogs can experience hair loss for a vast number of reasons, and only a veterinarian is qualified to diagnose individual problems. However, knowing some of the most common causes of hair loss can help you narrow down the potential cause.

Allergies or Irritants

Dermatitis, or inflammation of the skin, can occur when an allergen or irritating substance touches the skin or is eaten or inhaled. These substances include chemicals, antibiotics, metals, pollen, mold, dust mites and plants like poison ivy.

Calluses

Calluses can occur particularly in large dog breeds due to chronic pressure on an area, often elbows or other bony pressure points.

Hypothyroidism

Hypothyroidism is common in dogs, and occurs when insufficient thyroid hormones are produced.

Mange

Mange results when dogs become infected with mites, usually the Sarcoptes, Demodex or Cheyletiella mite.

Ringworm

Ringworm is a fungal infection that usually appears in the form of a small, round, hairless lesion.

Folliculitis

Folliculitis is an infection of the hair follicles that may appear on the abdomen or other areas with less hair.

References

• PetEducation.com: Causes of Hair Loss
• PetEducation.com: Ringworm in Dogs