why do you pass out from pain

Dear Reader,
Ouch! Looks like youвve acquired quite a few bumps and bruises! Itвs actually not unusual to faint after experiencing physical pain. A fainting spell is most commonly due to a temporary interruption in the functioning of your bodyвs autonomic nervous system. The autonomic nervous system regulates your heart rate and blood pressure. When you experience sudden pain, your heart rate and blood pressure can rapidly decrease, which affects the amount of blood flowing to your brain. This stress on the body, primarily the sudden loss of blood, can result in fainting. A few fainting spells over a lifetime is fairly common among healthy people, but there are certain instances when fainting can be indicative of a more serious condition. For example, if your fainting episodes happened over a short period of time, or if you begin to experience fainting spells more often, you should seek medical attention. Fainting is not necessarily an abnormal reaction to the type of pain youвve described. In fact, fainting episodes make up six percent of hospital visits! That is quite a high number when you think about the myriad of illnesses and injuries people suffer from. While each of us has a different level of pain tolerance, there has been no conclusive scientific evidence to suggest that fainting is related to an individualвs pain threshold. The jury is still out on why pain tolerance varies from person to person.

However, some studies suggest that there might be an underlying genetic component that enables some people to withstand more pain than others. В Just remember to keep tabs on how often you experience fainting in order to avoid anything more serious. And please, dear reader, be careful out there! Alice! Fainting can be scary. It's a brief episode of unconsciousness caused by a sudden drop in blood pressure, where not enough oxygen reaches your brain. Fainting is also known as "passing out", "blacking out", or as the medical term syncope. But usually someone who faints regains consciousness right away, sometimes after a brief period of confusion, and the cause of the faint is not serious. The person who has fainted may feel unwell for a brief time, with a full recovery taking several minutes. In general, the more someone faints, the more likely they are to faint again. But why does it happen? There are a great many possible causes for fainting. Common ones include: Changes to the body's blood pressure usually due to low blood pressure - heart rate, or heart rhythm. Are there any other symptoms? Fainting often happens very suddenly and the first thing someone usually knows about it is when they come round from the faint. But a faint may be preceded by other symptoms occurring just before one happens. These are called premonitory symptoms and include light headedness and dizziness, sweaty palms, nausea, fading vision and a general feeling of being unwell.

Sometimes, people who are about to faint and who recognise these signs lie down or elevate their legs to prevent a faint occurring. There may be a period of unconsciousness lasting for a few seconds but this is usually followed by a full recovery after a few minutes. Fainting often occurs when the blood pressure falls suddenly as you stand up this is called orthostatic hypotension and is more common in older people. Dehydration, untreated or poorly controlled diabetes, some medicines (such as diuretics, which increase the production and flow of urine from the body, beta-blockers and some types of antidepressants) and health conditions that affect the nervous system, such as Parkinson's disease, can all be triggers for orthostatic hypotension in some people. A temporary drop in blood pressure can also be caused by prolonged standing (especially in hot weather), emotional distress, and the sight of blood or a hypodermic needle. What else can cause fainting? The most common cause of blacking out is usually due to low blood pressure. But there are other causes including epileptic seizures and anxiety. Other possible reasons why there may be loss of consciousness include low blood sugar (hypoglycaemia), lack of oxygen from a variety of causes (hypoxia) and over-breathing (hyperventilation).

It is also possible to lose consciousness after a fall, a blow to the head or due to excess alcohol or other drugs. Strokes and mini strokes (transient ischaemic attacks) can also result in a loss of consciousness but a key point is that symptoms such as prolonged unconsciousness, confusion after the event, incomplete recovery and tongue biting all suggest that the cause is not a simple faint. What should I do if I feel faint? If you know or suspect that you are going to faint, you should lie down, preferably in a position where your head is low and your legs are raised. This will encourage blood flow to the brain. If it is not possible to lie down, sit down with your head between your knees. Fresh air can also help, especially if you are feeling hot. If you do faint, remain lying down for ten minutes. Sit up slowly when you need to get up. What should I do if someone else faints? Help the person lie down but if they are unconscious, roll them onto their side. Check they are breathing and that they have a pulse. If possible, elevate the person's feet above the height of their head. If the fainting episode was brought on by heat, remove or loosen clothes, and try to cool the person down by wiping them with a wet cloth or fanning them. In an emergency, call for medical assistance if the person has not regained consciousness within a few seconds or recovered in a few minutes.

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