Fainting takes different forms, a heart doctor says; a drop in blood pressure can cause it – or it can be a sign of a serious ...

A yawn is an involuntary reflex where you open your mouth, breathe in deeply, and then quickly exhale. Researchers aren’t exactly sure why yawning occurs, but common triggers include fatigue and ...

Most fainting is harmless, but not always The most common type of fainting is vasovagal syncope ... any provocation causes a reflex in the heart," Dr. Behr explained in a news release.

SUNDAY, Feb. 23, 2025 (HealthDay News) -- Fainting can be scary, but it's often harmless. Known medically as syncope, fainting happens when there’s not enough blood flow to the brain, causing a ...

The AV block was probably caused by a hypersensitive vagotonic reflex triggered by mechanical receptors in the lower oesophagus, resulting in suppression of the AV node. Head up tilt test revealed an ...

People who experience Vasovagal Syncope, a heritable tendency to fainting induced by emotional challenges (and needle/blood phobia), are also more vulnerable to anxiety disorders. Neuroimaging ...