A college student with chronic headaches who suddenly became too dizzy to walk learned she had postural tachycardia syndrome — also called postural orthostatic tachycardia syndrome — a condition in which simply being upright causes lightheadedness and an elevated heart rate.
via NYT > Fitness & Nutrition http://ift.tt/1DmTCa0
via NYT > Fitness & Nutrition http://ift.tt/1DmTCa0
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