vasovagal presyncope symptoms
Symptoms. Before you faint due to vasovagal syncope, you may experience some of the following: Pale skin; Lightheadedness; Tunnel vision â your field of vision narrows so that you see only what's in front of you; Nausea; Feeling warm; A cold, clammy sweat; Yawning; Blurred vision; During a vasovagal syncope episode, bystanders may notice: Jerky, abnormal movements