What causes you to black out for a couple of minutes?

Vasovagal syncope (fainting)

Vasovagal syncope (also known as neurocardiogenic syncope or a vagal episode) happens when the vagus nerve, which links your brain to your heart, overreacts to certain triggers, such as the sight of blood, an injury or emotional distress.

Other causes

- Cardiac Arrhythmias

- Anemia

- Blood Sugar Issues

- Hyperventilation

- Dehydration

- Medication/Drugs

- Neurological Disorders

- Carbon Monoxide Poisoning

- Heart Disease

- Stroke