The heart normally beats at a rate of about 60 to 100 beats per minute at rest. A rate faster than 100 beats a minute in an adult is called tachycardia. Most people experience transient rapid heartbeats, called sinus tachycardia, as a normal response to excitement,
The two main types of tachycardia are abnormal supraventricular tachycardias (which originate in the upper...
What we call normal rhythm is stimulated by a group of cells in the upper chamber of our heart called the atrium. This group of cells is in... Read more »
Restless legs syndrome or Ekbom Syndrome affects hundreds of people night after night, keeping them and their partners awake. It can... Read more »
Full Question: Anyone who experiences numbness/tingling on one side, then blurred vision, lasting a few minutes?My migraines returned at... Read more »
Full Question: Family member started having these strange episodes. They started with tingling in the hands followed by general weakness... Read more »
Source: ADAM Encyclopedia
Ventricular tachycardia (VT) is a rapid heartbeat that starts in the ventricles.Alternative NamesWide-complex tachycardia; V tach; Tachycardia -... Read more »
Source: ADAM Encyclopedia
Paroxysmal supraventricular tachycardia (PSVT) is an occasional rapid heart rate. "Paroxysmal" means from time to time. Alternative NamesPSVT;... Read more »
Source: ADAM Encyclopedia
Multifocal atrial tachycardia is a rapid heart rate that occurs when too many signals (electrical impulses) are sent from the upper heart to the... Read more »
Source: ADAM Encyclopedia
Numbness and tingling are abnormal sensations that can occur anywhere in your body, but are often felt in your fingers, hands, feet, arms, or... Read more »
A reader asks People's Pharmacy writers Joe and Terry Graedon about leg numbness that neurologists could not explain. The Graedons respond that the... Read more »