.Feline HCM is the most common form of heart disease in cats. It causes the heart muscle, particularly the left ventricle, to thicken, making it harder for the heart to pump blood effectively. This condition can lead to complications such as congestive heart failure.

 Early stages may show no obvious symptoms. As the disease progresses, cats may experience rapid breathing, difficulty breathing, lethargy, decreased appetite, or even sudden collapse. In some cases, HCM is only discovered during a routine veterinary exam or after a sudden, severe event. 

While there is no cure for HCM, the condition can often be managed with medications to help the heart function more effectively and reduce the risk of complications. Regular monitoring and veterinary follow-up are essential. Some cats live many years with HCM, especially if diagnosed early and treated appropriately.  The first feline HCM drug therapy will be available August 2025.

It’s completely normal to feel overwhelmed after an HCM diagnosis. The first step is to work closely with your veterinarian or a veterinary cardiologist to create a care plan. Ask questions, track symptoms, and follow medication and follow-up schedules. Many cats with HCM live happy, fulfilling lives with the right care and monitoring. 

Yes! You are not alone. There are online groups, educational websites, and advocacy organizations that offer guidance, share personal stories, and help you connect with others navigating feline HCM. Communities such as ours can be a valuable source of emotional support, practical advice, and the latest information in the field.