According to the anxiety definition in Mosby's Dictionary of Medicine, Nursing, and Health Professions, anxiety is the anticipation of impending danger and dread accompanied by restlessness, tension, rapid heartbeat, and rapid breathing that may or may not be associated with a certain event or situation.
Anxiety is a normal human emotion that everyone experiences at times. Many people feel anxious, or nervous, when faced with a problem at work, before taking a test, or making an important decision. Anxiety disorders, however, are different. They can cause such distress that it interferes with a person's ability to lead a normal life.
Anxiety is the vague, uneasy feeling you get when you're dreading something. Anxiety can also be a permanent state of nervousness that some people with mental illnesses experience, a kind of milder version of panic.
Anxiety is a multisystem response to a perceived threat or danger. It reflects a combination of biochemical changes in the body, the patient's personal history and memory, and the social situation.
Anxiety is a general term for several disorders that cause nervousness, fear, apprehension, and worrying.