Last Updated March This article was created by familydoctor. Fainting happens when your brain does not get enough oxygen. The primary symptom of fainting is losing consciousness. But there are other symptoms that may occur before you faint. These include feeling:. Fainting, which is also called syncope, can be caused by many different things. Sometimes a specific cause for fainting cannot be found. A sudden drop in your blood pressure can cause you to faint. This is very common among older people.
It is also common in people who have certain health conditions, such as diabetes. Fainting can happen when:. Coughing, urinating, and stretching can also get in the way of the flow of oxygen to the brain and may cause you to faint. But if it happens more than once, tell your doctor about it.
If you faint when you turn your head to the side, the bones in your neck may be pinching one of the blood vessels that lead to your brain. If this happens to you, be sure to tell your doctor about it.
A drop in your blood sugar may also cause you to faint. This can happen if you have diabetes. Faint is also noun with the meaning: the act of fainting, syncope. Faint is also adjective with the meaning: of a being lacking strength. To lose consciousness. Barbarella79 New Member Italy,italian.
Hi everybody! I'd like to know if the verbs "faint" and "pass out" mean exactly the same thing ossia svenire in English, or if there's any difference between the two, even the slightest. Thank you in advance. Hi Barbarella, well pass out means: to lose consciousness; faint.
So it looks like there is no subtle difference unless medically speaking there is. But for that you must ask a doctor. Barbarella79 said:. Click to expand Victoria32 Senior Member New Zealand. English UK New Zealand.
It is the most common cause of fainting. NMS can occur in various situations. These include:. Orthostatic hypotension : this is a fall in blood pressure on standing up, which can cause fainting. It can occur:. Cardiac syncope : this occurs due to an underlying heart problem.
There may be a family history of sudden death. The faint may be preceded by chest pain or the sensation of having a 'thumping heart' palpitations and may happen during exercise. These details will help the doctor to make a diagnosis. Your doctor will examine you. They will check your heart, including your blood pressure when sitting and standing and your pulse. You may be asked to have a heart tracing an electrocardiogram, or ECG.
You may have blood tests for anaemia and diabetes. Further tests of your heart and nervous system may be necessary. Give yourself a check-up with a general blood profile, now available in Patient Access. The most common cause of blacking out is fainting.
Other causes include epileptic seizures , syncope due to anxiety psychogenic pseudosyncope and other rare causes of faints. Other causes of blacking out may be due to low blood sugar hypoglycaemia and lack of oxygen hypoxia from a variety of causes.
It may be due to over-breathing hyperventilation but this is rare. You may also black out after a fall or blow to the head or due to excess alcohol or street drugs. Strokes and mini strokes transient ischaemic attacks can also result in a blackout.
Prolonged blackout, confusion after the event, incomplete recovery and tongue biting all suggest that the cause is not a simple faint. Treatment will depend on the likely cause of your blackout.
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