FAQs to Ask a Vet About Heartworm Treatment

Heartworm, also referred to as Dirofilaria immitis, is a type of parasite that is spread by mosquitos.  The ailment is detrimental to its host's lungs, veins and in some cases the heart itself. It can affect cats, foxes and even human beings but it is most commonly seen in dogs.    Although heartworm is treatable, most veterinarians still suggest that all canines take regular preventative medications.  

Q: What is heartworm?

A: Heartworm disease is an ailment that develops when an animal has been bitten by a mosquito carrying a parasitic infection.  It is one of the most common diseases among dogs, especially ones residing in tropical and temperate areas.  If left untreated, heartworm can lead to lung failure, damaged organs and death.

Q: What are the symptoms of heartworm?

A: The disease's physical signs will vary from dog to dog and depend on how many mosquito larvae they were infected with.  Many canines will present with persistent coughs, weight loss, a significant decrease in appetite and fatigue.  As the condition progresses, pets may begin suffering from a drastic accumulation of fluids and heart blockages.

Q: How long does it take before the infection can be detected by a blood test?

A: It takes approximately six to seven months after infestation before adult heartworms can be detected by your vet's blood tests.

Q: Why does my dog need a prescription for preventive heartworm medication?

A: Heartworm medicine must be obtained through your veterinarian because your dog must be tested for the infection prior to taking it.  Giving this type of medication to a dog with Dirofilaria immitis present in his bloodstream could cause him to have an extreme, and even deadly, reaction.

Q: Does my pet still need to take regular preventive medications if I live in an area with a cold climate?

A: Yes. Even northern states have mosquito seasons during their spring and summer months, making year-round preventive treatments necessary.

Q: What if my pet tests positive for heartworm disease?

A: It all depends on whether or not your pet is showing symptoms of the ailment.  Your vet will determine the best course of action and begin treating your pet right away.