Dizziness, Palpitations: 18 Possible Causes
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What causes dizziness and palpitations? 18 possible conditions

See a list of possible causes in order from the most common to the least.

1

Abnormal Heart Rhythms

This condition is considered a medical emergency. Urgent care may be required.

An abnormal heart rhythm (arrhythmia) is a change in the heart's beating pattern. There are many different types with different causes and effects. Possible symptoms are feeling faint, chest pain, and sweating.

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2

Hyperventilation

Hyperventilation happens when you suddenly start breathing very quickly. Exhaling more than you inhale causes low carbon dioxide levels.

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3

High Blood Pressure Overview

High blood pressure (hypertension) increases your risk for heart attack, stroke, coronary heart disease, and other serious health problems.

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4

Low Blood Sugar (Hypoglycemia)

This condition is considered a medical emergency. Urgent care may be required.

Also known as hypoglycemia, low blood sugar can be a dangerous condition. Hypoglycemia is rare in people who are not suffering from diabetes, the chronic disease that affects the body's ability to regulate blood sugar...

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5

Panic Disorder

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.

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6

Ventricular Tachycardia

This condition is considered a medical emergency. Urgent care may be required.

Ventricular tachycardia is a very fast heart rhythm that begins in the ventricles. Learn about ventricular tachycardia symptoms, causes, and diagnosis.

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7

Paroxysmal Supraventricular Tachycardia (PSVT)

This condition is considered a medical emergency. Urgent care may be required.

People with paroxysmal supraventricular tachycardia (PVST) experience a faster-than-normal heart rate. Learn more about the symptoms and risk factors.

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8

Atrial Flutter

Atrial flutter (AFL) is a type of abnormal heart rate, or arrhythmia. It occurs when the upper chambers of your heart (the atria) beat too fast. When the top of your heart (atria) beats faster than the botto...

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9

Atrial Fibrillation and Flutter

Atrial fibrillation and atrial flutter are irregular heart rhythms that occur when the upper chambers of your heart (the atria) beat too fast.Atrial fibrillation can be sustained or can occur in bursts. It creates a...

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10

Heart Murmurs and Other Sounds

A murmur is a blowing, whooshing, or rasping sound that occurs during a heartbeat. It may be an early indicator of a serious heart condition.

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11

Hypertrophic Cardiomyopathy

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.

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12

Sick Sinus Syndrome

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.

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13

Post Traumatic Stress Disorder (PTSD)

Post-traumatic stress disorder (PTSD) is an anxiety disorder that occurs after experiencing or witnessing a traumatic event. PTSD can cause disruptive symptoms of panic, increased arousal, and mental/emotional problems.

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14

Drug Allergy Overview

This condition is considered a medical emergency. Urgent care may be required.

A drug allergy is an allergic reaction to a medication. Your immune system identifies the drug as foreign and acts to eliminate it from your body.

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15

Multifocal Atrial Tachycardia and Your Heart

In multifocal atrial tachycardia (MAT), the upper heart chambers send electrical signals through too many pathways to the lower chambers, causing the heart beats much faster than normal. This can lead to rapid pulse an...

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16

The Catastrophy of Cardiac Tamponade

This condition is considered a medical emergency. Urgent care may be required.

Cardiac tamponade is a condition where the sac that encases your heart fills with fluid and then puts pressure on your heart. This undue pressure keeps the heart from filling with blood properly. When this happens, th...

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17

Agoraphobia

Agoraphobia is an anxiety disorder that makes people very fearful of certain places and situations. Learn about agoraphobia causes, symptoms, and treatment.

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18

Agoraphobia With Panic Attacks

Panic attacks are feelings of sudden fear without reasonable cause. Agoraphobia is another type of anxiety disorder. Read about symptoms and treatment.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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