Khaberni - Some people experience sudden fainting when seeing blood, in a scene that may seem related to fear, yet doctors confirm that the cause is mostly purely physiological and is medically known as "vasovagal syncope".
This type of fainting occurs when the nervous system reacts excessively to certain stimuli, such as the sight of blood or exposure to severe emotional stress. In this case, the vagus nerve is activated, leading to slowing of the heart rate and dilation of blood vessels, thereby reducing blood pressure and temporarily reducing blood flow to the brain, causing dizziness or loss of consciousness.
Vasovagal syncope is a common condition, especially among young people and healthy individuals, and studies indicate that about one-third of people may experience at least one fainting episode during their lifetime. Factors that increase the likelihood of it happening include dehydration, standing for long periods, hunger, fatigue, sudden change in body position, or psychological stress.
This type of fainting is generally not associated with heart or nervous system diseases, although its recurrence without a clear cause warrants a medical consultation for reassurance.
Fainting is usually preceded by warning signs, including dizziness, sweating, paleness of the face, blurry vision, nausea, or ringing in the ears. Doctors advise that upon experiencing these symptoms, one should immediately sit down or lie down and raise their legs, and breathe slowly and deeply.
For prevention, it is recommended to maintain adequate fluid intake, eat regular meals, and avoid known triggers as much as possible. Gradual exposure therapy under the supervision of a specialist may also help people who faint at the sight of blood.
Experts emphasize that understanding this condition and early management of its symptoms reduces the risk of complications and provides affected individuals with better control over it.
