What are the most common causes of nausea and fainting?

Nausea refers to a feeling of lightheadedness and dizziness or the feeling a person has before vomiting. Fainting is when a person unexpectedly loses consciousness for a short period of time. Conditions that cause nausea and fainting include vasovagal syncope and carbon monoxide poisoning.

Vasovagal syncope, also called "common faint" is the most common form of fainting. In addition to nausea and fainting, symptoms of vasovagal syncope include cold sweats, wet sweats, and paleness. Other symptoms may include blurred vision, yawning, and lightheadedness.

A "system shock" that affects the part of the nervous system that affects heart rate and blood pressure can cause vasovagal syncope. Ultimately, this decreases the amount of blood flowing to the brain, leading to a short period of unconsciousness until the body readjusts. Shocks that can lead to vasovagal syncope can include emotional reactions to the sight of blood or injury, physical factors such as standing with your legs locked for too long, and environmental causes such as standing in a hot, crowded room with poor ventilation. for an extended period of time. hour. Additionally, medical conditions including heart disorders, low blood sugar, also called hypoglycemia, or dehydration, can lead to vasovagal syncope.

Common fainting spells do not usually require medical attention. If the fainting episode is the first incident, the victim should make an appointment to see a doctor to ensure that the episode of vasovagal syncope is not related to an underlying medical condition. Treatments will depend on what underlying disease, if any, led to the fainting.

Carbon monoxide poisoning is the most common form of accidental poisoning leading to death in the United States. Detection of carbon monoxide, a gas, is difficult as carbon monoxide has no taste, color or odour. Methods to prevent carbon monoxide poisoning include installing carbon monoxide detectors, maintaining and using gas appliances as directed by the appliance manufacturers, and always opening the garage door before starting a car. vehicle. Also, people should only buy gas appliances that have been approved by organizations like the American Gas Association or Underwriters' Laboratories.

Nausea and fainting are two symptoms of carbon monoxide poisoning. In addition to nausea and fainting, a person experiencing carbon monoxide poisoning may be confused, may vomit, or may experience chest pains. People who are drunk or asleep can succumb to carbon monoxide poisoning without experiencing any of the symptoms associated with poisoning. Also, people who have already lost consciousness can remain unconscious until they die.

Victims of carbon monoxide poisoning need oxygen. In a hospital situation, pure oxygen may be delivered to the patient through a mask over the nose and mouth. Some cases require treatments in a hyperbaric chamber, where oxygen is supplied to the entire body under pressurized conditions.

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