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Your doctor will diagnose carotid artery disease based on your medical history, a physical exam, and results from one or more tests: ultrasound, angiography, magnetic resonance angiography (MRA), and computed tomography (CT) angiography.

Carotid artery disease seems to start when damage occurs to the inner layers of the carotid arteries. The buildup of plaque or blood clots can severely narrow or block the carotid arteries, which limits the flow of oxygen-rich blood to your brain.

Carotid artery disease is a disease in which a waxy substance called plaque builds up inside the carotid arteries in either side of the neck. The common carotid arteries divide into internal carotid arteries, which supply oxygen-rich blood to your brain, and external carotid arteries, which supply oxygen-rich blood to your face, scalp, and neck.

You can't prevent inherited types of cardiomyopathy. You can take steps to lower your risk for diseases or conditions that may lead to or complicate cardiomyopathy through avoiding alcohol and illegal drugs, getting enough sleep, heart-healthy eating, physical activity, quitting smoking, and managing stress.

Many times, the cause of cardiomyopathy isn’t known. Cardiomyopathy can be acquired (you are not born with the condition but develop it due to another disease, condition, or factor) or inherited (your parents passed the gene for the disease on to you).

The types of cardiomyopathy include hypertrophic, dilated, restrictive, arrhythmogenic right ventricular, and unclassified cardiomyopathy.

Cardiomyopathy refers to diseases of the heart muscle in which the heart muscle becomes enlarged, thick, or rigid. As cardiomyopathy worsens, the heart becomes weaker.

Adopting a healthy lifestyle, along with ongoing care and emotional support, may help you prevent or delay atherosclerosis and the problems it can cause.

Taking action to control your risk factors—through heart-healthy eating, physical activity, quitting smoking, and weight control—can help prevent or delay atherosclerosis and its related diseases.

Your doctor will diagnose atherosclerosis based on your medical and family histories, a physical exam, and results from one or more tests: blood test, electrocardiogram (EKG), chest x ray, ankle/brachial index, echocardiography, computed tomography (CT) scan, stress testing, and angiography.