What Is Heartworm Disease?
Heartworm disease is spread through mosquito bites and is primarily caused by a parasitic worm called Dirofilaria immitis.
Pets including dogs, cats, and ferrets may become hosts for heartworms, meaning the parasitic worms live, mate, and produce offspring in the animal's body. The illness is called heartworm disease because the worms live in the heart, lungs, and blood vessels of an infected pet.
What are the symptoms of heartworm disease?
Unfortunately, the symptoms of heartworm disease do not appear until the disease has reached more advanced stages. Once heartworm symptoms do appear they typically include swollen abdomen, coughing, fatigue, weight loss, and difficulty breathing.
How does my vet check my pet for heartworms?
Your vet can complete blood tests to detect heartworm proteins (antigens), which are released into the animal's bloodstream. Heartworm proteins can't be detected until about five months (at the earliest) after an animal is bitten by an infected mosquito.
What if my pet is diagnosed with heartworm?
Heartworm treatment varies between cats and dogs. Heartworm treatment is often lengthy, uncomfortable, and potentially dangerous for your pet—and expensive for you. This is why we say prevention is the absolute best treatment for heartworm disease.
If your pet is diagnosed with heartworm, your vet will discuss potential treatment options with you. For dogs, an FDA-approved medication (melarsomine dihydrochloride), which contains arsenic, will be given via a series of injections into your dog's back muscles. This treatment option is toxic to cats so your vet will discuss alternative therapies with you.
Heartworms can live in dogs for 5-7 years while cats typically only live for 2-3.
How can I prevent my pet from getting heartworm disease?
It's important to keep your pet on preventive medication to prevent heartworm disease. Even if they are already on preventive heartworm medication, we recommend that dogs be tested for heartworms annually.
Heartworm prevention is safer, easier, and much more affordable than treating the progressed disease. Several heartworm preventive medications can also help protect against other parasites such as hookworms, whipworms, and roundworms.