Definitions
Postural orthostatic tachycardia syndrome
Overview
This syndrome is usually triggered when a person stands up after lying down. It most commonly affects women between the ages of 15 and 50.
Symptoms
Symptoms include lightheadedness, fainting, and rapid heartbeat, which are relieved by lying down again.
Treatments
Adding extra salt to the diet, increasing fluids, and using medications can help the disorder.