Anxiety is used to describe feelings of worry, fear and unease. Typically, it incorporates both the emotional and physical sensations we experience when worried or nervous. Anxiety is related to the 'fight or flight' response and, while unpleasant, this is a normal reaction when our body perceives a threat.
We will all feel anxious at some time and it's very common to feel tense or unsure about a potentially stressful situation, such as an exam, starting a new job, or moving home. However, some of us will be affected more than others. Despite being a normal experience, if these feelings are very strong or are lasting a long time, it can be overwhelming.