Generalised Anxiety Disorder, or GAD, is one of the most common mental health conditions in the UK. Yet many people who live with it go years without a diagnosis, often assuming that constant worry is simply part of their personality.
This article explains what GAD is, how it is diagnosed, what the current treatment options look like on the NHS, and how clinical research is working to find better solutions for people whose symptoms do not respond to standard care.
What Is Generalised Anxiety Disorder?
GAD is a long-term condition characterised by persistent, uncontrollable worry about a wide range of everyday situations. Unlike specific phobias or panic disorder, GAD does not centre on one particular fear. Instead, people with GAD tend to move from one worry to the next, often before the previous one has been resolved.
The NHS describes GAD as a condition where anxiety is present most days and significantly affects how a person functions in daily life.
GAD is estimated to affect around 6 in 100 people in the UK at any given time. It is more common in women than in men and can develop at any age, although it most often begins in a person’s 20s or 30s.
Symptoms of GAD
GAD causes both psychological and physical symptoms. They can vary from person to person, and many people do not realise that their physical complaints are linked to anxiety.
Psychological symptoms
- Persistent, excessive worry that is difficult to control
- Feeling on edge or restless
- Difficulty concentrating or finding that the mind goes blank
- Irritability
- A sense of dread or that something bad is about to happen
Physical symptoms
- Muscle tension or aches
- Headaches
- Tiredness
- Dizziness or feeling lightheaded
- A pounding or racing heartbeat
- Sweating
- Difficulty falling or staying asleep
- Stomach problems, including nausea or diarrhoea
It is also common for people with GAD to experience low mood or depression alongside their anxiety. The two conditions frequently occur together, which can make both harder to manage.
How Is GAD Diagnosed?
There is no single test for GAD. A GP will make a diagnosis based on a conversation about your symptoms, how long they have been present, and the extent to which they are affecting your daily life.
According to NHS diagnostic guidance, a GP may diagnose GAD if you:
- Worry about a wide range of different things (not just one specific issue)
- Find it difficult to control your worry
- Have been experiencing significant anxiety for at least six months
- Have symptoms that are affecting your work, relationships, or general functioning
A GP will usually also ask about your physical health and may run some tests to rule out other causes for symptoms such as tiredness or a fast heartbeat.
How Is GAD Treated on the NHS?
The NHS uses what is known as a “stepped care” model to treat GAD. This means that treatment starts with the least intensive options and steps up if symptoms do not improve.
Step 1: Education and active monitoring
At the first step, a GP will explain what GAD is, offer written materials or online resources, and encourage lifestyle changes such as regular exercise, reducing caffeine, and improving sleep habits. Some people with mild symptoms find that this level of support is enough.
Step 2: Low-intensity interventions
If symptoms persist, the next step typically involves guided self-help based on cognitive behavioural therapy (CBT) principles. This might be delivered through a workbook, an online course, or short appointments with a trained practitioner. Group psychoeducation sessions are also offered in some areas.
Step 3: Talking therapy or medication
For moderate to severe GAD, a GP will usually refer a person for individual CBT with a qualified therapist. Sessions typically take place weekly over a period of three to four months. Applied relaxation therapy is another option at this stage.
Medication is also offered at this level of care. The most commonly prescribed medicines for GAD are:
- SSRIs (selective serotonin reuptake inhibitors) such as sertraline or escitalopram, which are usually the first choice
- SNRIs (serotonin-noradrenaline reuptake inhibitors) such as venlafaxine
- Pregabalin, which may be considered if antidepressants have not helped
Medication for GAD often needs to be taken for at least several months before a decision is made about whether it is working.
Step 4: Specialist care
If two or more treatments have been tried without meaningful improvement, a GP will consider referring a person to specialist mental health services. This might involve more intensive psychological therapy, a review of medication, or input from a multidisciplinary team.
When Standard Treatments Do Not Help
It is important to note that GAD does not always respond well to the treatments currently available. A significant number of people continue to experience symptoms even after completing a course of CBT or trying more than one medication. For some, side effects from medication make it difficult to continue treatment.
This is one of the reasons why clinical research into anxiety disorders is so important. Trials are testing new approaches to treatment that could help people for whom existing options have not been effective.
What Role Does Clinical Research Play?
Clinical trials allow researchers to test new treatments in a controlled and safe way. For conditions like GAD, this might include new types of medication, novel delivery methods for existing treatments, or entirely new therapeutic approaches.
Taking part in a clinical trial gives people access to treatments that are not yet widely available on the NHS. All trials are conducted under strict ethical guidelines and overseen by regulatory bodies, so participant safety is always the priority.
If you are interested in what it means to take part in research and what you might gain from doing so, you can read more about the real benefits of joining a clinical trial.
Clinical Trials UK runs studies at its Manchester and London sites for a range of mental health conditions. If you would like to find out whether you could be suitable, you can find more information about how to take part in an anxiety clinical trial in Manchester.
GAD also frequently occurs alongside depression, and some people may meet the criteria for both conditions at the same time. If you are unsure which category your symptoms fall into, it may be worth reading about whether a depression trial could also be right for you.
Who Is Eligible to Take Part in an Anxiety Trial?
Eligibility criteria vary between studies, but most anxiety trials look for adults who have a confirmed or suspected diagnosis of GAD, who are experiencing ongoing symptoms, and who have not found sufficient relief from current treatments. Some trials require participants to be medication-free, while others accept people who are currently taking medication.
A screening visit is usually the first step, during which a researcher will ask detailed questions about your symptoms and medical history to confirm whether you meet the criteria for that particular study.
Key Takeaways
- GAD is a common, long-term anxiety condition marked by persistent worry about a wide range of everyday situations
- Symptoms include both psychological effects (such as restlessness and poor concentration) and physical effects (such as muscle tension and disturbed sleep)
- GPs diagnose GAD based on symptoms lasting at least six months that are affecting daily life
- The NHS treats GAD using a stepped care model, starting with self-help and moving to CBT and medication if needed
- For people whose symptoms do not respond to standard care, clinical trials offer access to new and emerging treatments
- Clinical Trials UK runs anxiety research studies at its Manchester and London clinics
If you would like to find out more about taking part in research, visit the how to take part in an anxiety clinical trial in the UK page on the Clinical Trials UK website.
