Symptoms

Signs and symptoms of hypertrophic cardiomyopathy may include one or more of the following:

• Chest pain, especially during exercise
• Fainting, especially during or just after exercise or exertion
• Heart murmur, which a doctor might detect while listening to your heart
• Sensation of rapid, fluttering or pounding heartbeats (palpitations)
• Shortness of breath, especially during exercise

When to see a doctor

A number of conditions can cause shortness of breath and heart palpitations. It's important to get a prompt, accurate diagnosis and appropriate care. See your doctor if you have a family history of HCM or any symptoms associated with hypertrophic cardiomyopathy.

Call 911 or your local emergency number if you have any of the following symptoms for more than a few minutes:

• Rapid or irregular heartbeat
• Difficulty breathing
• Chest pain