Why Does My Dog Have a Swollen Lymph Node? Causes, Symptoms, and Treatment Options

1. Understanding Lymph Nodes in Dogs

Lymph nodes are small, bean-shaped structures found throughout a dog's body, playing a key role in its immune system. They act as filters for harmful substances and help fight infections. Healthy lymph nodes are typically not visible or palpable, but when they become swollen, it could be a sign of an underlying issue.

2. Common Causes of Swollen Lymph Nodes in Dogs

There are several reasons why a dog might experience swollen lymph nodes. Some of the most common causes include:

1. Infections: Bacterial, viral, or fungal infections can cause lymph nodes to swell as the body works to fight off the invading pathogens.
2. Cancer: Lymphoma or other cancers can lead to swollen lymph nodes, often accompanied by other symptoms like lethargy, weight loss, or poor appetite.
3. Inflammatory Conditions: Conditions like autoimmune diseases or allergies can also result in lymph node swelling.
4. Injury: A localized injury near a lymph node can cause it to swell as part of the healing process.

3. When Should You See a Veterinarian?

If your dog has a swollen lymph node, it's essential to monitor their symptoms closely. While some causes of swelling, such as mild infections, may resolve on their own, others, like cancer or severe infections, require immediate veterinary intervention. You should seek veterinary care if:

• The swelling persists for more than a few days.
• Your dog is showing signs of pain, fever, or lethargy.
• You notice any other unusual symptoms, like vomiting or difficulty breathing.

4. Treatment Options for Swollen Lymph Nodes

The treatment for a swollen lymph node will depend on its underlying cause. Common treatments include:

1. Antibiotics or Antifungals: If the swelling is caused by an infection, antibiotics or antifungal medications may be prescribed to help fight the infection.
2. Chemotherapy or Radiation: In cases where cancer is the culprit, chemotherapy or radiation therapy may be necessary to treat the cancer and reduce the swelling.
3. Surgical Removal: If a benign tumor or abscess is present, your veterinarian may recommend surgery to remove the swollen node.
4. Supportive Care: For inflammatory conditions, anti-inflammatory medications or immunosuppressive drugs might be used to manage the swelling and underlying immune response.

5. Preventive Care for Your Dog's Lymphatic Health

Maintaining your dog's overall health can reduce the risk of lymph node issues. Regular checkups with your veterinarian are crucial for early detection of potential problems. Additionally, keeping your dog on a balanced diet, exercising regularly, and minimizing exposure to harmful pathogens can help support their immune system and prevent infections.

6. How Hidden Brook Veterinary Can Help

If your dog has a swollen lymph node, Hidden Brook Veterinary is here to help. Our expert veterinarians can perform diagnostic tests to identify the root cause of the swelling and provide the best treatment options. Whether your dog needs medication, surgery, or cancer treatment, we are dedicated to ensuring your pet receives the highest level of care.

For more information or to schedule an appointment, visit Hidden Brook Veterinary.