Overview
Anxiety disorders are the most common mental health conditions worldwide, involving excessive, persistent fear and worry that significantly interferes with daily life. They include generalised anxiety disorder (GAD), panic disorder, social anxiety disorder, and specific phobias. While anxiety is a normal response to stress, anxiety disorders are characterised by disproportionate fear that does not subside and affects functioning.
Causes and risk factors
The following factors are associated with the development of Anxiety Disorders:
- Genetic predisposition
- Altered brain chemistry and neurotransmitter function
- Childhood trauma or adverse experiences
- Chronic stress or major life changes
- Thyroid disorders and other medical conditions
- Substance use and withdrawal
- Personality traits such as perfectionism
- Comorbid depression
- Prolonged use of certain medications
Signs and symptoms
Common signs and symptoms of Anxiety Disorders include:
- Persistent excessive worry
- Restlessness and feeling on edge
- Fatigue and difficulty concentrating
- Muscle tension and headaches
- Sleep difficulties
- Panic attacks with racing heart and breathlessness
- Sweating and trembling
- Avoidance of triggering situations
- Nausea or stomach problems
Diagnosis
Anxiety Disorders is typically diagnosed through a combination of medical history, physical examination, and appropriate investigations such as blood tests, imaging, or specialist review, depending on the specific condition and presentation. Your doctor will consider all relevant symptoms and risk factors before making a diagnosis.
Treatment options
Treatment approaches for Anxiety Disorders may include:
- Cognitive behavioural therapy (CBT) — most effective treatment
- Exposure therapy for phobias
- SSRIs and SNRIs — first-line medications
- Buspirone for generalised anxiety
- Short-term benzodiazepines for acute episodes
- Mindfulness-based stress reduction
- Regular aerobic exercise
- Limiting caffeine and alcohol
- Relaxation techniques
Prevention
Regular exercise, adequate sleep, limiting caffeine, stress management, maintaining social connections, early intervention.
Complications
If left untreated or poorly managed, Anxiety Disorders can lead to complications including:
Depression, substance misuse, physical health problems, social isolation, and reduced quality of life.
Sources and references: This article is written in accordance with NHS UK, WHO, and Mayo Clinic clinical guidelines. It is reviewed for accuracy by the SymptomSense content team. ICD-10 code: F41. Last reviewed June 2026.