Cardiomyopathy refers to diseases of the heart muscle. These diseases have many causes, signs and symptoms, and treatments.
In cardiomyopathy, the heart muscle becomes enlarged, thick or rigid. In rare cases, the muscle tissue in the heart is replaced with scar tissue.
As cardiomyopathy worsens, the heart becomes weaker. It's less able to pump blood through the body and maintain a normal electrical rhythm. This can lead to heart failure or irregular heartbeats called arrhythmias. In turn, heart failure can cause fluid to build up in the lungs, ankles, feet, legs, or abdomen.
The weakening of the heart also can cause other complications, such as heart valve problems.
The main types of cardiomyopathy are:
- Dilated cardiomyopathy
- Hypertrophic cardiomyopathy
- Restrictive cardiomyopathy
- Arrhythmogenic right ventricular dysplasia
Other types of cardiomyopathy sometimes are referred to as "unclassified cardiomyopathy."
Cardiomyopathy can be acquired or inherited. "Acquired" means you develop it due to another disease, condition or factor. "Inherited" means your parents passed the gene for the disease on to you. Many times, the cause of cardiomyopathy isn't known.
Cardiomyopathy can affect people of all ages. However, people in certain age groups are more likely to have certain types of cardiomyopathy. This article focuses on cardiomyopathy in adults.
Some people who have cardiomyopathy have no signs or symptoms and need no treatment. For other people, the disease develops quickly, symptoms are severe, and serious complications occur.
Treatments for cardiomyopathy include lifestyle changes, medicines, surgery, implanted devices to correct arrhythmias, and other nonsurgical procedures. These treatments can control symptoms, reduce complications, and stop the disease from getting worse.
What Causes Cardiomyopathy?
Cardiomyopathy can be acquired or inherited. "Acquired" means you develop it due to another disease, condition or factor.
"Inherited" means your parents passed the gene for the disease on to you. Researchers continue to look for the genetic links to cardiomyopathy. They also continue to explore how these links cause or contribute to the various types of the disease.
Many times, the cause of cardiomyopathy isn't known. This often is the case when the disease occurs in children.
Also in this section:
- Understand Your Risk of Cardiomyopathy
- Symptoms and Diagnosis of Cardiomyopathy
- Prevention and Treatment of Cardiomyopathy
- Cardiomyopathy in Children
Source: National Heart, Lung, and Blood Institute, National Institutes of Health, U.S. Department of Health and Human Services