Vasovagal attack

Vasovagal attack (also known as vasovagal syncope) is a condition that leads to fainting in some people. It is the most common cause of fainting. It can happen when you are frightened, stressed, or have been standing for a long time. It can also happen after exercise, or when you are in pain.

Causes

The exact cause of vasovagal syncope is not known, but it is believed to involve the nervous system. The vagus nerve, which helps control the heart rate and blood vessels, may send signals that slow the heart rate or dilate blood vessels in certain situations. This can cause a drop in blood pressure, leading to fainting.

Symptoms

The symptoms of a vasovagal attack can vary from person to person. Some people may experience a feeling of warmth, nausea, sweating, or a rapid heartbeat before fainting. Others may have no warning at all.

Diagnosis

Vasovagal syncope is usually diagnosed based on a person's medical history and a physical exam. Tests may be done to rule out other causes of fainting, such as heart problems.

Treatment

Treatment for vasovagal syncope focuses on preventing fainting episodes. This may involve avoiding triggers, such as standing for long periods or stressful situations. Medications may also be used in some cases.

See also

• Syncope
• Vagus nerve
• Blood pressure

Vasovagal attack Resources
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