Anxiety disorders are the most common group of emotional disorders and one of the leading causes of disability worldwide, yet a 2018 review found that most people living with an anxiety disorder are never identified and never receive care that matches treatment guidelines.
Part of the problem, according to the review, is how anxiety disorders present. Symptoms can look very different from person to person, and clinicians outside mental health settings, such as GPs, often lack confidence diagnosing and managing these conditions. The review describes anxiety as arising from a complex mix of biological, psychological, temperamental and environmental factors, with growing evidence pointing to a shared pattern: difficulty regulating a network in the brain sometimes called the threat circuit, involving areas responsible for detecting danger and managing emotional response.
The encouraging part of the picture is that effective treatments already exist. Cognitive behavioural therapy and antidepressant medication have both been shown to influence activity in this circuit, working through different mechanisms to bring anxiety back under control.
Anxiety that interferes with daily life is common, and it is treatable. If anxiety is affecting you or someone you care about, speaking with a psychologist is a good place to start.
What the review covered
This 2018 clinical review set out to summarise the current understanding of anxiety disorders for practising clinicians: their underlying biology, the environmental and biological risk factors that contribute to them, the diagnostic criteria used in the DSM-5, and a practical approach to treating anxiety disorders in adults. As a review rather than a study of new patients, it draws together existing research rather than reporting new data.
What it found
One of the review's central findings is a gap between how common anxiety disorders are and how often they are properly identified and treated. Despite being widespread, most people with an anxiety disorder are not recognised as having one, and do not receive care that matches clinical guidelines. The authors point to two contributing factors: the many different ways anxiety disorders can present, which makes them harder to recognise, and a lack of confidence among clinicians, particularly those working outside specialist mental health settings, in accurately diagnosing and treating these conditions.
On the biological side, the review describes anxiety disorders as emerging from an interplay of biological, psychological, temperamental and environmental influences. It highlights converging evidence for a shared underlying pattern across different anxiety disorders: dysfunction in a threat circuit in the brain, involving connections between the dorsomedial prefrontal cortex, the insula and the amygdala, regions involved in detecting and responding to perceived danger. Established treatments, including cognitive behavioural therapy and antidepressant medication, have been shown to influence activity within this circuit, though through different routes, one described as working top-down and the other bottom-up.
Why it matters
For anyone wondering whether their anxiety is bad enough to seek help, this review is a useful reminder that anxiety disorders are both extremely common and frequently missed, not because they are rare or trivial, but because they can look different from person to person and are not always picked up outside specialist care. It also reinforces that current treatments are grounded in an understanding of what is actually happening in the brain, rather than being a generic response to distress. Cognitive behavioural therapy in particular has a well-established evidence base and a plausible biological mechanism behind why it works.
Its limits
As a review article, this paper does not present new clinical data of its own; it summarises and interprets existing research, so its conclusions are only as strong as the studies it draws on. It focuses on the treatment of anxiety disorders in adults, and its practical recommendations are aimed primarily at prescribing clinicians rather than psychologists specifically. It also does not report on the specific effectiveness of different treatments, only that they exist and act on relevant brain circuitry.
Anxiety that is not recognised is anxiety that is not treated. If anxiety symptoms are getting in the way of daily life, a proper assessment with a psychologist can clarify what is going on and what can help.