TL;DR: Elbow calluses are typically harmless, hairless patches caused by lying on hard surfaces, but you should contact a vet if the area starts bleeding, oozing, or causing your dog to limp.
Why does my dog have thickened, hairless patches on their elbows?
Thickened, hairless patches on a dog's elbows are commonly known as pressure sores or hyperkeratosis. These occur when the skin tries to protect itself against repeated friction and pressure, usually from lying on hard surfaces like tile, concrete, or wood floors. Over time, the skin toughens and loses hair to create a protective barrier.
Are dog elbow calluses an emergency, and when should I see a vet?
The urgency level for simple elbow calluses is Low. While they may look unusual, they are generally a cosmetic issue and do not cause your dog pain. However, you should schedule a non-emergency appointment with your veterinarian if you notice:
- Bleeding or oozing from the site
- A foul odor
- Your dog is limping or showing signs of pain
Why should I send a photo of my dog's elbow callus to a veterinarian?
Sharing a clear photo with a veterinary professional helps determine if the growth is a simple callus or something more complex. A photo allows us to:
- Distinguish calluses from hygromas (fluid-filled sacs) or skin infections
- Examine the texture and color of the affected area
- Provide the most accurate advice for your pet's comfort
Clinical Context (Merck Veterinary Manual)
Elbow calluses (pressure sores) in dogs, often affecting the olecranon, can develop into severe inflammation, ulceration, infection, abscesses, granulomas, and fistulas. Early management of hygromas involves aseptic needle aspiration, followed by providing soft bedding to prevent further trauma. Chronic hygromas may require surgical drainage, flushing, and placement of Penrose drains. Laser therapy can be used for small lesions, while severe ulceration may necessitate extensive drainage, extirpation, or skin grafting. Intrahygromal corticosteroids are not recommended. Untreated lesions can progress to decubital ulcers and become complicated with comedones and furunculosis; some dogs may also develop follicular cysts.
Chapter: Dermatology
Source: The Merck Veterinary Manual, 11th Edition (Page 973)