What is Anxiety?
Anxiety is a universal emotion characterised by unpleasant feelings of fear, nervousness, and worry, usually in the face of uncertainty and potential threats. Anxiety is a natural emotion and therefore all of us will experience anxiety from time to time. It is important to make a distinction between normal levels of anxiety and symptoms that might indicate the presence of an underlying disorder. This is because anxiety is just our body’s natural response to stress, especially when this concerns a worrisome or threatening scenario.
Although anxiety is triggered by a worrisome thought (e.g. losing one’s job), the emotion sets-off a chain reaction that affects every single organ system in the body. This biological process primes the body for action, known as the ‘fight or flight’, is the body’s natural reaction to stressful or harmful situations. As such, anxiety is a product of our evolutionary development, which for countless millennia has kept us safe from harm and helped us defend ourselves against predators. In the modern age, however, anxiety is needed less often for physical threats and more for situations that require us to be mentally alert, such as preparing for a public speaking event or dealing with uncertainties in work.
Most of the anxiety people experience on a day-to-day basis usually does not cause significant harm to the individual, as it is proportionate to the situation passes naturally with time. However, anxiety can develop into a full-blown mental health disorder in a minority of people, especially if the anxious situations are repetitious, unpredictable or severe. This is what is clinically defined as ‘anxiety disorder’, which entails an intense and excessive fear/worry about something, usually felt over an extended period of time (i.e. at least 2 months).
This type of anxiety impairs a person’s ability to function on a daily basis or to effectively carry out their responsibilities. Symptoms commonly include very strong, mixed emotions (e.g. restlessness, nervousness or feeling constantly on edge), cognitive symptoms (e.g. distractable, poor focus, thoughts of impending danger), physical symptoms (e.g. trembling, sweating, heart palpitations), and behavioural symptoms (avoidance, poor sleep and hygiene, isolation).
There are different types of anxiety disorders that involve the above symptoms but vary due to the source of distress. For example, generalised anxiety disorder is the most common anxiety-related diagnosis, characterised by nonspecific worrying about a variety of things. Contrarily, social anxiety and phobias are disorders that have a very specific object of distress, which are, respectively, exposure to social gatherings (especially where strangers are present) and proximity to a feared object or situation (e.g. spiders, closed/crowded spaces, heights, etc.).
Post-traumatic stress disorder is another anxiety-related disorder, which is caused by experiencing adversity (e.g. being abused, witnessing something extreme, having a near-death experience, etc.) that leaves a person extremely on-edge about suffering a similar fate in future, resulting in avoidant behaviours and alterations in mood. Obsessive-compulsive disorder, body dysmorphia, and health anxiety are less common anxiety-related disorders, although they each have a considerable impact on a person’s mental health and quality of life.