Conditions list medically reviewed by George Krucik, MD, MBA
An abnormal heart rhythm is when your heart beats too fast, slow, or irregularly. This is also called an arrhythmia. Within the heart is a complex system of valves…
Ventricular tachycardia is a very fast heart rhythm that begins in the ventricles. Learn about ventricular tachycardia symptoms, causes, and diagnosis.
Sick sinus syndrome is a general name for a group of disorders that can cause abnormal beating of the heart. Read about symptoms and treatment options.
Panic disorder occurs when you live in fear of a panic attack. You may be having a panic attack when you feel sudden, overwhelming terror with no obvious cause.
A drug allergy is an allergic reaction to a medication. Find out how to know if you have one and what to do about it.
Cardiomyopathy is a disease in which your heart muscle weakens and has difficulty pumping blood. Read about its causes, risk factors, treatment, and more.
Hypoglycemia, or low blood sugar, is a potentially dangerous condition that's most common in people with diabetes. Learn what causes it and how to prevent it.
People with paroxysmal supraventricular tachycardia experience a faster-than-normal heart rate. Learn more about the symptoms, treatments, and outlook.
Atrial fibrillation and flutter are irregular heart rhythms that occur when the upper chambers of the heart beat irregularly or too fast. Fibrillation can be sustained…
Hypertrophic cardiomyopathy is a condition in which your heart muscle is thicker than normal. It can interfere with your heart's ability to pump blood.
Cardiac tamponade is a very serious condition in which your heart can't pump enough blood to your body due to fluid buildup around your heart.
In aortic valve disease, the valve that controls the flow of blood from your left ventricle (lower left heart chamber) to your aorta (main artery) malfunctions.
PTSD can affect anyone who has undergone a traumatic event. Read more on how to cope with it.
Myocarditis is inflammation of the heart muscle. It is a rare condition that can be caused by any number of autoimmune diseases, viral, bacterial, or fungal infections…
Aortic valve stenosis most often develops in older adults, but it can also affect newborns. Here's what you need to know about the causes and symptoms.
MAT causes your heart to beat much faster than it normally should. Learn about other symptoms and treatment options.
Guillain-Barré syndrome is a rare but serious autoimmune disorder. We'll teach you about its symptoms, such as tingling, and ways to manage the condition.
Lyme disease is an infectious disease that's transmitted to humans through tick bites. Learn how Lyme disease is diagnosed and treated, and learn how to prevent tick…
Aortic valve insufficiency (AVI) is also called aortic insufficiency or aortic regurgitation. This condition develops when the aortic valve is damaged.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.