Anxiety is one of the most fundamental emotions shared by all species of animals. When confronted with danger, the fight or flight response of the sympathetic nervous system is triggered so that we are prepared to react and protect ourselves. Without anxiety and its physiological manifestations, such as hypersensitivity to environment and enhanced blood supply to leg muscles, the likelihood of harm or disaster in threatening situations would undoubtedly dramatically increase. A moderate amount of anxiety also has the result of prompting individuals to prepare for certain events, such as exams and presentations, that clearly benefit from this action.
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.
An anxiety disorder is a serious mental illness. For people with anxiety disorders, worry and fear are constant and overwhelming, and can be crippling.
Anxiety is an unpleasant state of inner turmoil, often accompanied by nervous behavior, such as pacing back and forth, somatic complaints and rumination.[2] It is the subjectively unpleasant feelings of dread over something unlikely to happen, such as the feeling of imminent death.[3] Anxiety is not the same as fear, which is felt about something realistically intimidating or dangerous and is an appropriate response to a perceived threat;[4] anxiety is a feeling of fear, worry, and uneasiness, usually generalized and unfocused as an overreaction to a situation that is only subjectively seen as menacing.[5] It is often accompanied by restlessness, fatigue, problems in concentration, and muscular tension. Anxiety is not considered to be a normal reaction to a perceived stressor although many feel it occasionally.
Anxiety