Bruising (Hematoma) in Dogs
When to visit the vet?
Non-urgent see a veterinarian within 2–3 days
ORANGE for rapid increase in size, severe Pain, hematomas without obvious trauma, Bleeding in other areas (nose, gums), lethargy; RED for Pallor/collapse, shortness of breath, or suspected internal Bleeding after trauma.
Unsure about what’s wrong with your pet? Feel free to use our Symptom Checker for more clarity
Definition
A bruise, medically known as a hematoma, is an accumulation of blood outside the blood vessels, caused by an injury or another reason. In dogs, a hematoma often appears as a discolored, swollen area on or under the skin.
Can Occur with the Following Diseases:
- Inherited Blood Coagulation Disorder in Dogs (Von Willebrand Syndrome)
- Sago Palm Poisoning in Dogs (Sago Palm Toxicosis)
- Platelet Function Disorder in Dogs (Thrombocytopathy)
- Inflammation of the blood vessels throughout the body in dogs (Systemic vasculitis)
- Aflatoxin Poisoning in Dogs (Aflatoxin Mycotoxicosis)
- Muscle Injuries in Dogs (Muscle Strain, Muscle Tear, Muscle Rupture)
- Coagulation Factor Deficiency in Dogs (Hypocoagulopathy)
- Bone marrow disease with impaired blood cell maturation in dogs (Myelodysplastic syndromes, MDS)
- Liver Amyloid Deposits in Dogs (Hepatic Amyloidosis)
- Disseminated Intravascular Coagulation in Dogs (Disseminated Intravascular Coagulation, DIC)
- Chronic Lymphocytic Leukemia in Dogs (Chronic Lymphocytic Leukemia, CLL)
- Infectious hepatitis inflammation in dogs (Hepatitis contagiosa canis, CAV-1)
- Blood Clotting Disorder Due to Liver Dysfunction in Dogs (Hepatic Coagulopathy)
- Inherited Collagen Defect in the Connective Tissue of Dogs (Ehlers-Danlos Syndrome, Cutaneous Asthenia)
- Ehrlichiosis in Dogs (Canine Monocytic Ehrlichiosis, CME)
Basics and possible causes
Bruises occur when blood vessels are damaged and blood leaks into the surrounding tissue. This can be caused by blunt traumas such as bumps, falls, or bites. The body reacts to this injury by attempting to activate the blood coagulation system to stop blood loss and initiate healing.
There are various factors and conditions that can influence the development of hematomas in dogs. One of the most common causes is traumas, where dogs are injured in accidents or fights. Certain breeds, especially those with thin skin or deep-seated blood vessels, may be more prone to bruises.
Another important criterion is blood coagulation disorders. Some dogs may have a reduced ability for blood coagulation due to genetic predisposition or diseases such as von Willebrand disease. Liver diseases can also impair the production of coagulation factors, increasing the risk of bruises.
Medications such as anticoagulants or steroids can also affect blood coagulation and increase the risk of hematoma formation. It is important to inform the veterinarian about all medications a dog is taking, as these can be a crucial factor in the diagnosis and therapy of bruises.
Typical accompanying symptoms
- Swelling: A bruise often leads to a visible Swelling of the affected area. This Swelling results from the accumulation of blood and can vary depending on the severity of the injury.
- Skin discoloration: The skin over a hematoma can take on a bluish, reddish, or purplish color. This is a classic sign of blood that has entered the tissue.
- Pain: The area may be sensitive and cause Pain, especially when touched. This can lead to Behavioral changes, such as avoiding touch or Licking the spot.
- Limited mobility: In the case of larger hematomas or those located near joints, the dog may have difficulty moving normally.
- Hematomas in the ear area: In dogs, hematomas can also occur in the earlobe, leading to a so-called “aural hematoma”, which is particularly common in dogs with floppy ears.
When to visit the vet?
In certain situations, it is important to consult a veterinarian immediately. If the hematoma is large or growing rapidly, this could indicate severe internal Bleeding or a deeper trauma that requires immediate attention. Also, if the dog shows signs of severe Pain, Fever, or a general deterioration of health, a veterinarian should be consulted.
Another critical sign is the appearance of multiple hematomas without an apparent reason. This could indicate a systemic disease affecting blood coagulation and requires a thorough medical examination.
Symptom recognition for animal owners and veterinary diagnostic procedures
For pet owners, recognizing a hematoma is often visual. Observe your dog for signs of discomfort, Swelling, or skin discoloration. Pay attention to Behavioral changes that could indicate Pain, such as Licking a specific spot or Lameness.
During the veterinary visit, the veterinarian will first perform a thorough physical examination. This may include palpating the affected area to determine the type and extent of the hematoma. Blood tests may be ordered to identify possible blood coagulation disorders or underlying conditions.
Imaging procedures such as ultrasound or X-ray can also be helpful to assess the depth and exact location of the hematoma and rule out other injuries. In some cases, a sample of the affected tissue or fluid may be taken to rule out infections or other abnormalities.
What can pet owners do and professional therapy options
As a pet owner, you can take some measures to improve your dog’s comfort and support healing. One option is to gently cool the affected area to reduce Swelling and relieve Pain. Use a cold pack wrapped in a towel and apply it for short periods.
It is important to keep the dog calm and avoid excessive movement to prevent additional injuries. Make sure the dog does not lick or scratch the affected area, as this can delay healing or lead to infections. An Elizabethan collar can be useful in such cases.
Avoid administering Pain relievers or other medications without veterinary instruction, as some medications can further impair blood coagulation. If in Uncertainty / disorientation, you should always seek the advice of a veterinarian before taking any action.
Outlook on current research
Research on bruises or hematomas in dogs currently focuses on improving diagnosis methods and developing more effective therapy approaches. Scientists are investigating the biochemical processes that lead to hematoma formation to better understand how tissues respond to injuries and how blood vessels in dogs can be structurally and functionally protected. In dogs, hematoma formation is often associated with traumatic injuries, but anticoagulant medications can also play a role. Researchers are working to identify molecular differences in blood coagulation between different dog breeds, which could help develop more individualized therapy plans.
Another area of research is the investigation of genetic factors that could make dogs more susceptible to hematomas. Studies have shown that certain genetic markers are associated with an increased susceptibility to blood coagulation disorders, which could increase the risk of hematomas. Identifying such markers could help develop preventive measures and conduct risk assessments for various breeds. Furthermore, research is being conducted on how diet and lifestyle changes can influence the frequency and severity of hematomas, which could lead to better prevention strategies in the long term.
Innovative approaches in biotechnology also have the potential to revolutionize the therapy of hematomas in dogs. Researchers are testing the use of stem cells and regenerative therapies to promote healing and reduce the inflammatory response in affected tissues. These therapies could improve the regenerative capacity of the tissue and shorten healing time. In addition, clinical trials are underway to evaluate the effectiveness of new topical treatments specifically developed for use in dogs to accelerate the absorption of hematomas.
An interdisciplinary approach, bringing together veterinarians, geneticists, and pharmacologists, is considered crucial to better understand the complexity of hematoma formation in dogs. By combining clinical observations with advanced laboratory techniques, researchers hope to gain more comprehensive insights that will improve not only the therapy but also the prevention of hematomas. New technologies, such as high-resolution imaging, are being used to gain detailed insights into the structure and healing of hematomas, which could lead to more accurate diagnosis tools.
Finally, there is also research on the development of integrative databases that collect and analyze information about hematomas in dogs. These databases are intended to make it easier for veterinarians to identify patterns and trends that could indicate underlying health problems. By using machine learning and artificial intelligence, predictive models are to be developed that can calculate the risk of hematomas based on a dog’s individual health and genetic profiles.