What causes lightheadedness? 39 possible conditions

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

1

Lightheadedness

Feeling lightheaded is a sensation that may precede syncope or fainting. It is usually experienced when in an upright position (standing or sitting). If

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2

Anxiety

What is anxiety? Anxiety often manifests itself as an apprehension about daily life. Learn the basics with this overview of the types of anxiety disorders.

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3

Panic Disorder

Panic disorder is a condition chararcterized by persistent anxiety and recurrent panic attacks. Sweating or chills are possible signs of a panic attack.

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4

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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5

Heart Attack Overview

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

A clot blocks the blood flow to the heart (heart attack), and damages heart muscle. Symptoms include chest pain, shortness of breath, and a blue or grey tinge to the skin.

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6

Heat Emergencies

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

Heat emergencies are health crises caused by exposure to hot weather and sun. Heat emergencies have three stages: heat cramps, heat exhaustion, and heatstroke. All three stages are serious.

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7

Iron Deficiency Anemia

Iron-deficiency anemia is the most common type of anemia, which occurs when the body does not have enough of the mineral iron. The body needs iron to produce hemoglobin, which carries oxygen to the body's tissues...

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8

High Blood Pressure Overview

High blood pressure (hypertension) increases your risk for heart attack, stroke, coronary heart disease, and other serious health problems. Left untreated, high blood pressure can damage blood vessels and vital organs.

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9

Congestive Heart Failure (CHF)

Congestive heart failure is a chronic condition that affects the four chambers of the heart. Early symptoms include fatigue and weight gain. Irregular heart beat and wheezing indicate a worsening.

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10

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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11

Bleeding

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

Bleeding can refer to blood loss inside the body (internal bleeding) or blood loss outside of the body (external bleeding). It can cause bruising, pain, and symptoms of shock. Too much bleeding can lead to death.

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12

Food Poisoning

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

Food poisoning occurs when you consume foods contaminated with bacteria, viruses, or parasites. Symptoms are usually uncomfortable but not severe. Serious reactions can be life threatening and require medical treatment.

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13

Acute Mountain Sickness

Acute mountain sickness (altitude sickness or high altitude pulmonary edema) occurs in high altitudes, especially when exercising. A lack of oxygen can give the skin and lips a blue tinge.

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14

Agoraphobia

Agoraphobia is an anxiety disorder that causes people to avoid situations that might cause them to feel trapped, helpless, embarrassed, or scared. It's more common in women than it is in men.

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15

Alkalosis

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

Alkalosis is a condition in which the body fluids have excess base (alkali). This is the opposite of excess acid (acidosis). The fluids in your body contain two substances: acids and bases; alkali is the base. Th...

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16

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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17

Ventricular Tachycardia

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

Ventricular tachycardia (VT) is a very fast heartbeat caused by a malfunction of the heart's pacing mechanism. VT can occur with or without heart disease. Symptoms include fainting, dizziness, and more.

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18

Alcoholic Ketoacidosis

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

Cells need glucose (sugar) and insulin to function properly. Glucose comes from the food you eat, and the pancreas produces insulin. When you drink alcohol, your pancreas may stop producing insulin for a short time...

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19

Ischemic Cardiomyopathy

Ischemic cardiomyopathy is a condition that occurs when the heart muscle is weakened due to insufficient blood flow to the heart's muscle. This inhibits the heart's ability to pump blood and can lead to heart failure.

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20

Alcoholic Liver Disease

Damage to the liver from excessive drinking can lead to ALD. Years of alcohol abuse cause the liver to become inflamed and swollen. This damage can also cause scarring known as cirrhosis. Cirrhosis is the final stage o...

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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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