What causes fainting? 41 possible conditions

Viewing 21 - 40 of 41 results

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

21

Multifocal Atrial Tachycardia and Your Heart

If you have multifocal atrial tachycardia (MAT), your heart is beating much faster than it normally does. This happens when the upper chambers of your heart send too many electrical signals to the lower chambers. It i...

Read more »

22

Hyperemesis Gravidarum

Most women (70 to 80 percent) experience morning sickness (nausea) during pregnancy. This condition is generally harmless, and while morning sickness can be quite uncomfortable, it typically subsides within 12 weeks...

Read more »

23

Alcohol Withdrawal Syndrome

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

Alcohol withdrawal syndrome (AWS) is the name for the symptoms that occur when a heavy drinker suddenly stops or significantly reduces their alcohol intake. With AWS, you may feel mild anxiety and fatigue. You may als...

Read more »

24

Lyme Disease

Lyme disease is an infectious disease. It is caused by the bacteria Borrelia burgdorferi sensu lato. B. burgdorferi is transmitted to humans via a tick bite from an infected black-legged or deer tick. The tick become...

Read more »

25

Carbon Monoxide Poisoning

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

Carbon monoxide (CO) is a gas that is both odorless and colorless. It emanates from anything that produces combustion fumes. Common devices that produce these fumes include: heaters fireplaces car mufflers space heater...

Read more »

26

Fertilizer and Plant Food Poisoning

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

Plant food-also known as plant fertilizer-is commonly used on plants in homes or gardens. Such fertilizers keep plants healthy and allow them to grow faster. Plant foods can be hazardous to people and pets throug...

Read more »

27

Guillain-Barre Syndrome

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

Guillain-Barre syndrome is a rare but serious autoimmune disorder in which the immune system attacks healthy nerve cells of the peripheral nervous system. This leads to weakness, numbness, and tingling, and ca...

Read more »

28

Post Traumatic Stress Disorder (PTSD)

Post-traumatic stress disorder (PTSD) is a debilitating anxiety disorder that occurs after experiencing or witnessing a traumatic event that involves either a real or perceived threat of injury or death. This ca...

Read more »

29

Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy (HCM) is a condition where your heart muscle, or myocardium, becomes thicker than normal. This interferes with your heart's ability to pump blood.In most cases, HCM doesn't cause an...

Read more »

30

Aortic Valve Stenosis

The aorta is the main artery of the body. Oxygenated blood leaves the heart by way of the aorta and is carried to all parts of the body. The left ventricle is the chamber of the heart that pumps blood into the aort...

Read more »

31

Tetralogy of Fallot (TOF)

The main function of your heart is to pump blood through the rest of the body. This blood gives your body nutrients and oxygen. If your heart does not work properly, it may not be efficient in pumping blood to othe...

Read more »

32

Toxic Shock Syndrome

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

Toxic shock syndrome is a rare but serious medical condition caused by a bacterial infection. This condition is the result of toxins produced by the Staphylococcus aureus bacterium. Although toxic shock syndrome ha...

Read more »

33

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...

Read more »

34

Autonomic Neuropathy

Autonomic neuropathy (AN) is a condition that results from damage to nerves that assist in organ and organ system functioning. This nerve damage disturbs signal processing between the autonomic nervous system and th...

Read more »

35

Wolff-Parkinson-White Syndrome

Wolff-Parkinson-White syndrome is a birth defect in which the heart develops an extra electrical pathway, which can lead to a rapid heart rate (tachycardia). Medications may help alleviate the symptoms. However, ...

Read more »

36

Teenage Pregnancy

Teenage pregnancy is pregnancy in a woman 19 years of age or younger. A woman can get pregnant if she has vaginal sex with a man at any age after she has started having regular monthly periods. Concerns for th...

Read more »

37

Primary Pulmonary Hypertension

Primary pulmonary hypertension (PPH) is now known as pulmonary arterial hypertension (PAH). The name was changed in 1998 to pulmonary arterial hypertension (PAH) because it was determined to be more descriptive of th...

Read more »

38

Aortic Valve Disease

Aortic valve disease is a condition that occurs when the main artery of your body, the aorta, and the left ventricle of the heart malfunction. The aortic valve determines how blood flows from the left ventricle (th...

Read more »

39

Aortic Valve Insufficiency

Aortic valve insufficiency (AVI), is also called aortic insufficiency or aortic regurgitation. This condition indicates damage to the aortic valve. AVI affects one out of every 10,000 people between the ages of 30 an...

Read more »

40

Pulmonary Valve Stenosis

Your pulmonary valve rests between your right ventricle and your pulmonary artery, which sends oxygen-poor blood to your lungs. The valve acts as a doorway that lets blood into and out of your heart. If your pulmonar...

Read more »

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
  • Page 2 of 3
Advertisement
Add another symptom to narrow down the possibilities

I'm experiencing:

Choose from list of symptoms:

Advertisement
Advertisement