Fainting is one of the cases in which a person loses consciousness for a period of time, which is usually short because of the lack of access to the brain, where the patient falls on the ground with weak muscles of the body and the inability to move permanently, in addition to the subconscious awareness of what is happening around him For a period of time before regaining consciousness, the fainting may be preceded by warnings that the patient is about to lose consciousness such as dizziness that precedes fainting often, nausea and blurred vision.
Fainting occurs for a large number of reasons, which are often associated with blood, as fainting may occur because of a defect in the blood vessels or decrease in blood volume or insufficient blood supply to the brain due to the position of the body, Some drugs such as blood pressure medication, diabetes or prolonged lying down fainting in addition to low blood volume due to several factors such as bleeding, for example.
The heart may sometimes cause fainting, as the heartbeat may cause fainting due to insufficient blood supply to the brain or inability of the heart to reach the brain from the baseline, and some heart problems such as heart muscle disease and narrowing aorta and some tumors in The heart may become fainting, and the amount of blood the heart pumps into the brain may be insufficient to reach the brain adequately due to the presence of certain diseases in the blood vessels of the brain itself, such as migraines or the basal artery.
In addition, there are other diseases that may cause fainting and have the most common side effects, including low blood pressure. Low blood pressure causes a decrease in the amount of blood reaching the brain. Low blood pressure may occur for a number of reasons, including heart disease and bleeding, In addition to dizziness or hypoglycemia, it may also cause fainting, not due to insufficient blood flow to the brain, but not to enough sugar to supply brain cells to function properly. A result may occur Such as epilepsy or hysteria, and may occur as a result of psychological cases, which respond to the body by fainting or various operations lead to fainting and these cases are extreme tension, fear or panic or pass a crisis that creates psychological pressure on the human.