What causes fast heart rate and palpitations? 18 possible conditions

Viewing 18 of 18 results

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

1

Panic Disorder

Panic disorder occurs when you live in fear of having a panic attack. You are having a panic attack when you feel sudden, overwhelming terror that has no obvious cause. You may experience physical symptoms such as ...

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2

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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3

Hyperthyroidism

The thyroid gland produces a hormone that controls how your cells use energy (metabolize). Hyperthyroidism occurs when the body produces excessive amounts, causing rapid heart rates, weight loss, and heat intolerance.

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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

Atrial Fibrillation and Flutter

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 or can occur in bursts. Flutter is more rapid an...

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6

Septic Shock

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

Septic shock is a complication of an infection in which toxins can initiate a full-body inflammatory response and organ failure. Confusion, breathing problems, chills, and cold sweats.

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7

Paroxysmal Supraventricular Tachycardia (PSVT)

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

Paroxysmal supraventricular tachycardia (PSVT) is a faster-than-normal heart rate. It can last from a few minutes to several hours. PSVT is a fairly common type of (arrhythmia) that can occur in a person of any age.

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8

Mitral Valve Prolapse

In mitral valve prolapse, also called Barlow's syndrome, the flaps of the heart's mitral valve do not close correctly, the valve bulges into the atrium.

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9

Hypertensive Heart Disease

Hypertensive heart disease refers to heart conditions caused by high blood pressure. Possible signs of acute hypertension include sweating and chills.

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10

Drug Allergy Overview

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

Drug allergies occur when your immune system mistakes a drug for a harmful substance, triggering an inflammatory response (allergic reaction). This reaction is different from the side effects caused by a medication.

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11

Thyroid Storm

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

Thyroid storm is a life-threatening health condition that is associated with untreated or undertreated hyperthyroidism. During thyroid storm, an individual's heart rate, blood pressure, and body temperature can soar t...

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12

Ventricular Septal Defects

A ventral septal defect, more commonly known as a ventricular septal defect (VSD), is a hole between the heart's lower chambers (ventricles). The defect can occur anywhere within the muscle dividing the two sides of th...

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13

The Deadly Potential of Digitalis: Digitalis Toxicity

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

Digitalis toxicity (DT) occurs when you take too much digitalis (also known as digoxin or digitoxin), a medication used to treat heart conditions. Signs of toxicity include nausea, vomiting, and an irregular heartbeat...

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14

Congestive Heart Failure (CHF)

Congestive heart failure (CHF) is a chronic condition that affects the chambers of your heart. You have four heart chambers: two atria in the upper half of the heart and two ventricles in the lower half. Th...

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15

Agoraphobia

Agoraphobia is an anxiety disorder. People with agoraphobia avoid situations that might cause them to feel: trapped helpless panic embarrassment fearApproximately 0.8 percent of the adult population ha...

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16

Myocarditis

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, or parasites. When you have an infection or a...

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17

High Blood Pressure Overview

Hypertension, or high blood pressure (HBP), increases the risk of heart attack, stroke & other health problems. Learn HBP symptoms & get treatment under an MD's care.

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18

Alcoholic Cardiomyopathy

Alcoholic cardiomyopathy is a form of heart disease caused by alcohol abuse. Long-term alcohol abuse weakens and thins the heart muscle. The damaged muscle cannot pump blood as it should, which deprives the bod...

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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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