However, all of these signs are also common in other diseases. Diagnosis is difficult for veterinarians and may include outside laboratory tests, radiographs, and ultrasound studies. The good news is that there are heartworm prevention drugs available for cats. If you live in a heartworm infested area, or plan on visiting a heartworm area with your cat, your veterinarian can prescribe a preventive medication. These drugs are given once monthly and are very effective in cats and kittens.
Research continues into all phases of heartworm disease.
For the latest advice, consult your veterinarian.