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What causes dizziness, fatigue and shortness of breath? 13 possible conditions

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

1

Cold and Flu Overview

Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared symptoms include headache, cough, sore throat, and more.

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2

Bleeding

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

Bleeding, or hemorrhage, is the name used to describe blood loss. It can refer to blood loss inside the body, called internal bleeding. Or it can refer to blood loss outside of the body, called external bleeding...

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3

Hyperventilation

Hyperventilation is a condition in which you start to breathe very fast. Healthy breathing occurs with a healthy balance between breathing in oxygen and breathing out carbon dioxide. You upset this balance when yo...

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4

High Blood Pressure Overview

Hypertension, or high blood pressure, occurs when your blood pressure increases to unhealthy levels. Learn how to reduce your risk, note symptoms, and more.

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5

Hypovolemic Shock

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

Hypovolemic shock (hemorrhagic shock) is a life-threatening condition that results when you lose more than 20 percent of your body's blood or fluid supply, preventing the heart from pumping sufficient blood to your body.

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6

Paroxysmal Supraventricular Tachycardia (PSVT)

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

People with paroxysmal supraventricular tachycardia experience a faster-than-normal heart rate. Learn more about the symptoms, treatments, and outlook.

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7

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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8

Chemical Burns

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

Find information about chemical burns and how to prevent them. Learn about the causes, symptoms, and treatment of chemical burns.

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9

Acute Mountain Sickness

Acute mountain sickness is a condition that occurs when your body can't adjust to a high level of altitude. Learn more about the signs and how to treat it.

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10

Marine Animal Bites or Stings

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

Many marine animals bite or sting. Some animals are venomous, while others can inflict deep bites. Learn more about the risks and prevention.

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11

Polycythemia Vera

Polycythemia vera is a bone marrow disorder in which the body produces too many red blood cells. Here's what you need to know about this rare condition.

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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

Primary Pulmonary Hypertension

Primary pulmonary hypertension is now known as pulmonary arterial hypertension (PAH). The name was changed in 1998 because it was determined to be more descriptive of the condition. PAH is a disorder characterized by a...

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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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