Why do you faint?

Vasovagal syncope

- The most common cause of fainting, typically triggered by certain triggers (e.g., seeing blood, standing for a long time).

- Occurs when the vagus nerve, which helps control heart rate and blood pressure, is overstimulated, causing a sudden drop in blood pressure and slowing of the heart.

Cardiac syncope

- Caused by a problem with the heart, such as an arrhythmia (abnormal heart rhythm) or a structural defect.

- Can be serious and requires medical attention.

Orthostatic hypotension

- A condition in which blood pressure drops when you stand up from lying down or sitting.

- Common in older adults and people with certain medical conditions (e.g., diabetes, Parkinson's disease).

Situational syncope

- Caused by specific situations, such as coughing, sneezing, or swallowing.

- Usually not serious and does not require medical treatment.

If you experience lightheadedness or feeling faint, it is important to see a doctor to determine the cause and receive appropriate treatment. While most causes of fainting are not serious, some can be life-threatening if not treated promptly.