user: What are the symptoms of Coronary Heart Disease ?

assistant: A common symptom of coronary heart disease (CHD) is angina. Angina is chest pain or discomfort that occurs if an area of your heart muscle doesn't get enough oxygen-rich blood.
                
Angina may feel like pressure or squeezing in your chest. You also may feel it in your shoulders, arms, neck, jaw, or back. Angina pain may even feel like indigestion. The pain tends to get worse with activity and go away with rest. Emotional stress also can trigger the pain.
                
Another common symptom of CHD is shortness of breath. This symptom occurs if CHD causes heart failure. When you have heart failure, your heart can't pump enough blood to meet your bodys needs. Fluid builds up in your lungs, making it hard to breathe.
                
The severity of these symptoms varies. They may get more severe as the buildup of plaque continues to narrow the coronary arteries.
                
Signs and Symptoms of Heart Problems Related to Coronary Heart Disease
                
Some people who have CHD have no signs or symptomsa condition called silent CHD. The disease might not be diagnosed until a person has signs or symptoms of a heart attack, heart failure, or an arrhythmia (an irregular heartbeat).
                
Heart Attack
                
A heart attack occurs if the flow of oxygen-rich blood to a section of heart muscle is cut off. This can happen if an area of plaque in a coronary artery ruptures (breaks open).
                
Blood cell fragments called platelets stick to the site of the injury and may clump together to form blood clots. If a clot becomes large enough, it can mostly or completely block blood flow through a coronary artery.
                
If the blockage isnt treated quickly, the portion of heart muscle fed by the artery begins to die. Healthy heart tissue is replaced with scar tissue. This heart damage may not be obvious, or it may cause severe or long-lasting problems.
                
Heart With Muscle Damage and a Blocked Artery
                

                

                
The most common heart attack symptom is chest pain or discomfort. Most heart attacks involve discomfort in the center or left side of the chest that often lasts for more than a few minutes or goes away and comes back.
                
The discomfort can feel like uncomfortable pressure, squeezing, fullness, or pain. The feeling can be mild or severe. Heart attack pain sometimes feels like indigestion or heartburn.
                
The symptoms of angina can be similar to the symptoms of a heart attack. Angina pain usually lasts for only a few minutes and goes away with rest.
                
Chest pain or discomfort that doesnt go away or changes from its usual pattern (for example, occurs more often or while youre resting) might be a sign of a heart attack. If you dont know whether your chest pain is angina or a heart attack, call 911.
                
All chest pain should be checked by a doctor.
                
Other common signs and symptoms of a heart attack include:
                
Upper body discomfort in one or both arms, the back, neck, jaw, or upper part of the stomach
                
Shortness of breath, which may occur with or before chest discomfort
                
Nausea (feeling sick to your stomach), vomiting, light-headedness or fainting, or breaking out in a cold sweat
                
Sleep problems, fatigue (tiredness), or lack of energy
                
For more information, go to the Health Topics Heart Attack article.
                
Heart Failure
                
Heart failure is a condition in which your heart can't pump enough blood to meet your bodys needs. Heart failure doesn't mean that your heart has stopped or is about to stop working.
                
The most common signs and symptoms of heart failure are shortness of breath or trouble breathing; fatigue; and swelling in the ankles, feet, legs, stomach, and veins in the neck.
                
All of these symptoms are the result of fluid buildup in your body. When symptoms start, you may feel tired and short of breath after routine physical effort, like climbing stairs.
                
For more information, go to the Health Topics Heart Failure article.
                
Arrhythmia
                
An arrhythmia is a problem with the rate or rhythm of the heartbeat. When you have an arrhythmia, you may notice that your heart is skipping beats or beating too fast.
                
Some people describe arrhythmias as a fluttering feeling in the chest. These feelings are called palpitations (pal-pih-TA-shuns).
                
Some arrhythmias can cause your heart to suddenly stop beating. This condition is called sudden cardiac arrest (SCA). SCA usually causes death if it's not treated within minutes.
                
For more information, go to the Health Topics Arrhythmia article.