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Anxiety - Definition and Symptoms


Updated December 19, 2008


Anxiety is a mind/body response involving cognitive, emotional, physical and behavioral components.

The symptoms of anxiety may include:

  • Muscle tension
  • Disturbed sleep
  • Difficulty concentrating
  • Fatigue
  • Restlessness
  • Irritability
  • Increased startle response
  • Increased heart rate
  • Shortness of breath
  • Dizziness

These symptoms may be persistent and may affect one’s ability to carry out usual life functions.

Anxiety is often a symptom of panic disorder and other anxiety disorders, and is highly correlated with excessive worry. Anxiety is common and treatable.

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