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What is fainting a harmful symptom of?
Many different conditions can cause fainting. These include heart problems such as irregular heart beats, seizures, low blood sugar (hypoglycemia), anemia (a deficiency in healthy oxygen carrying cells), and problems with how the nervous system (the body’s system of nerves) regulates blood pressure.
What does fainting do to your brain?
The name of the condition refers to increased activity of the vagal nerve which signals the heart to slow down and for blood vessels (“vaso-“) to open up. This combination of effects leads to a drop in blood pressure and too little blood flow to the brain.
Should you fall asleep after fainting?
It is recommended that you lay the person down and elevate their feet. Most people will recover quickly after fainting once they lay down because more blood can flow to your brain.
When is fainting a sign of danger?
Fainting becomes a more serious concern when it happens to people who have a prior history of a heart attack, people who have had heart surgery, or those who have heart disease or an irregular heart rhythm. In those situations, fainting could be a sign of a heart problem requiring treatment.
When should you worry about fainting?
Fainting or feeling like you might faint. If you are suffering from a cold and you begin to feel lightheaded or dizzy, or if you actually faint, you should seek medical attention immediately.
What are the warning signs of fainting?
You may experience the following symptoms just before fainting: yawning. a sudden, clammy sweat. feeling sick (nausea) fast, deep breathing. confusion. lightheadedness. blurred vision or spots in front of your eyes.
What conditions can cause fainting?
Low blood pressure, also referred to as hypotension, is blood pressure that is so low that it causes symptoms or signs due to the low flow of blood through the arteries and veins. Some of the symptoms of low blood pressure include light-headedness, dizziness, and fainting if not enough blood is getting to the brain.