How to Tell If I Have Anxiety: Complete 2026 Doctor’s Self-Assessment Guide (WHO + NHS + DSM-5-TR)

Short answer: You may have anxiety if, for most days over the last 2 weeks or more, you have felt persistently worried or on edge, found the worry hard to control, and noticed physical symptoms (racing heart, muscle tension, sleep disturbance, gastrointestinal upset) and functional impairment at work, school, or in relationships. A validated self-screen like the GAD-7 (Generalised Anxiety Disorder 7-item scale) scoring ≥10 strongly suggests clinically significant anxiety and warrants a professional assessment.

This 2026 evidence-based guide, written by Dr Sagar Rajkuwar, walks you through the exact criteria doctors use (DSM-5-TR, ICD-11), the physical and psychological red flags, how to self-screen in under 3 minutes using the GAD-7, how anxiety differs from everyday stress, and when to seek help. We draw on WHO, NHS, CDC, APA, and NICE NG191 guidelines.

Table of Contents

1. What Anxiety Is (and Isn’t)
2. DSM-5-TR Diagnostic Criteria Explained Simply
3. Physical Symptoms Checklist
4. Psychological and Cognitive Signs
5. Behavioural Red Flags
6. The GAD-7 Self-Assessment
7. Panic Attacks vs Generalised Anxiety
8. Types of Anxiety Disorders
9. When to See a Doctor Immediately
10. What a Doctor Will Do
11. Treatment Overview
12. FAQs
13. References

1. What Anxiety Is (and Isn’t)

How to tell if I have anxiety starts with understanding the difference between normal worry and a disorder. Everyone feels anxious before an exam, a job interview, or a medical procedure — this is adaptive anxiety, the body’s threat-response system fine-tuning performance. Pathological anxiety, by contrast, is disproportionate, persistent, and impairing. The WHO estimates that in 2023, approximately 301 million people worldwide lived with an anxiety disorder, making it the most prevalent mental health condition globally.

Key distinction: adaptive anxiety ends when the stressor ends. In a disorder, the amygdala remains over-activated, the hypothalamic-pituitary-adrenal (HPA) axis secretes cortisol repeatedly, and the prefrontal cortex loses top-down regulation. Anxiety that lingers beyond 6 months, interferes with sleep, work, or relationships, or forces avoidance of normal activities is clinically significant.

2. DSM-5-TR Diagnostic Criteria Explained Simply

The American Psychiatric Association’s DSM-5-TR (Text Revision 2022, current through 2026) defines Generalised Anxiety Disorder (GAD) by these criteria:

• Excessive anxiety and worry on more days than not for ≥6 months
• Difficulty controlling the worry
• ≥3 of these six symptoms: restlessness, fatigue, concentration difficulty, irritability, muscle tension, sleep disturbance
• Clinically significant distress or impairment
• Not better explained by substance use or another medical condition

The ICD-11 (WHO, 2022) uses similar criteria with code 6B00. For children, only 1 of the 6 somatic symptoms is required.

3. Physical Symptoms Checklist

Many people seeking “how to tell if I have anxiety” are confused because their presenting complaint is physical, not emotional. The NHS lists these physical manifestations:

• Palpitations or racing heart
• Shortness of breath or hyperventilation
• Chest tightness or pressure
• Sweating, trembling, or hot flushes
• Dry mouth
• Gastrointestinal distress — nausea, loose stools, “butterflies,” irritable bowel syndrome-like symptoms
• Dizziness or derealisation
• Headaches and cervicogenic muscle tension
• Fatigue despite adequate rest
• Frequent urination
• Globus sensation — a lump in the throat
• Tingling in hands or feet (from respiratory alkalosis due to over-breathing)

If you consistently experience 4 or more of these without a medical cause, anxiety is a leading differential diagnosis.

4. Psychological and Cognitive Signs

How to tell if I have anxiety on the mental side: watch for catastrophic thinking, intrusive thoughts, rumination, difficulty concentrating, anticipatory worry, mind going blank, and a persistent sense of impending doom. People with anxiety often describe their mind as “a browser with 50 tabs open.” The cognitive triad of worry — overestimating threat, underestimating one’s coping, and avoiding — is the hallmark of GAD.

5. Behavioural Red Flags

Avoidance is the single most reliable behavioural marker. Signs include: declining social events, over-checking (re-reading emails, scanning symptoms online), reassurance-seeking, procrastination, “safety behaviours” (always sitting near the exit, carrying water bottles, pre-planning escape routes), and substance use to self-medicate — alcohol, benzodiazepines, cannabis, or caffeine withdrawal/overuse cycles.

6. The GAD-7 Self-Assessment

The GAD-7, developed by Spitzer et al. (2006) and used across the NHS, Veterans Affairs, and WHO mhGAP programmes, is the gold-standard primary-care screening tool. Over the last 2 weeks, how often have you been bothered by:

1. Feeling nervous, anxious, or on edge
2. Not being able to stop or control worrying
3. Worrying too much about different things
4. Trouble relaxing
5. Being so restless it is hard to sit still
6. Becoming easily annoyed or irritable
7. Feeling afraid as if something awful might happen

Score each: 0 = not at all, 1 = several days, 2 = more than half the days, 3 = nearly every day. Scoring interpretation: 0–4 minimal, 5–9 mild, 10–14 moderate, 15–21 severe. A score ≥10 has 89% sensitivity and 82% specificity for GAD.

7. Panic Attacks vs Generalised Anxiety

A panic attack is an abrupt surge of intense fear peaking within 10 minutes, with ≥4 symptoms (palpitations, sweating, trembling, shortness of breath, choking sensation, chest pain, nausea, dizziness, chills/hot flushes, paraesthesia, derealisation, fear of losing control, fear of dying). Panic disorder involves recurrent unexpected panic attacks plus persistent worry about having more. GAD is a slower, chronic burn of pervasive worry; panic disorder is episodic and explosive. The two frequently coexist.

8. Types of Anxiety Disorders (DSM-5-TR + ICD-11)

• Generalised Anxiety Disorder (GAD)
• Panic Disorder (with or without agoraphobia)
• Social Anxiety Disorder (social phobia)
• Specific Phobia
• Separation Anxiety Disorder
• Selective Mutism
• Illness Anxiety Disorder (formerly hypochondriasis)
• Agoraphobia

OCD and PTSD are now classified separately in DSM-5-TR but remain closely related.

9. When to See a Doctor Immediately

Seek urgent care if your anxiety is accompanied by: thoughts of self-harm or suicide, chest pain that cannot be distinguished from a cardiac event, inability to function at work/home for weeks, severe weight loss, use of alcohol or drugs to cope, or if a panic attack is your first ever (to rule out pulmonary embolism, hyperthyroidism, arrhythmia, or pheochromocytoma).

10. What a Doctor Will Do

A primary-care physician or psychiatrist will take a history (onset, duration, triggers, family history, substance use), administer the GAD-7 and PHQ-9 (for comorbid depression), examine for medical mimics, and typically order baseline blood tests — TSH, CBC, fasting glucose, vitamin D, vitamin B12, and ECG if cardiac symptoms are prominent. Severe cases may warrant a 24-hour urine metanephrines to exclude pheochromocytoma.

11. Treatment Overview

Evidence-based options per NICE NG191 (2024) and APA 2024:

• Cognitive Behavioural Therapy (CBT) — first-line, 12–20 sessions, effect size d ≈ 0.8
• SSRIs — sertraline, escitalopram, paroxetine
• SNRIs — venlafaxine XR, duloxetine
• Buspirone for GAD without comorbid depression
• Pregabalin in refractory GAD
• Short-term benzodiazepines only for acute crisis (risk of dependence)
• Lifestyle: 150 min/week aerobic exercise, caffeine <200 mg/day, sleep hygiene, mindfulness-based stress reduction (MBSR)

Related reading: For a full breakdown of what each treatment involves, see our guide on treatment for depression and anxiety. If low mood is also present, our article on depression and anxiety symptoms will help you tell them apart.

12. External Video Resource

Watch the WHO-aligned explainer: Anxiety Disorders — Clinical Overview (YouTube)

13. FAQs

Q1. Can anxiety cause real physical symptoms, or is it “just in my head”?
Real. The autonomic nervous system, HPA axis, and vagal tone produce measurable cardiac, gastrointestinal, and musculoskeletal effects. Anxiety is a whole-body condition.

Q2. Is anxiety genetic?
Heritability is 30–40%. Having a first-degree relative with an anxiety disorder increases your risk 3- to 5-fold, but environment and learned behaviour matter equally.

Q3. How long does untreated anxiety last?
Without treatment, GAD often becomes chronic, with a 12-year average time to diagnosis per WHO data. Early intervention improves prognosis dramatically.

Q4. Can anxiety go away on its own?
Mild, situation-linked anxiety can resolve. A disorder lasting >6 months rarely remits spontaneously without therapy, medication, or structured lifestyle change.

Q5. Is anxiety the same as stress?
No. Stress is a response to an identifiable external pressure; anxiety persists even when the pressure is gone, and is often disproportionate.

Q6. Which doctor should I see first?
Your family physician / GP. They can rule out medical mimics and refer you to a psychiatrist, clinical psychologist, or CBT therapist.

Q7. Does caffeine make anxiety worse?
Yes — intake >400 mg/day (about 4 cups of coffee) can trigger panic attacks in susceptible individuals and worsen GAD.

Q8. Can anxiety cause heart problems?
Chronic untreated anxiety is linked to higher rates of hypertension, atrial fibrillation, and ischaemic heart disease, likely via sustained sympathetic activation.

14. Conclusion

How to tell if I have anxiety comes down to three questions: Is my worry excessive and uncontrollable most days for 6 months or more? Do I have ≥3 somatic symptoms? Is it impairing my life? A GAD-7 score ≥10 is a strong signal to see a clinician. Anxiety is highly treatable — evidence-based options including CBT, SSRIs, and lifestyle change produce full remission in 50–70% of cases within a year. The earlier you act, the better the outcome.

15. References

1. World Health Organization. Anxiety disorders fact sheet, 2023–2024.
2. NHS. Generalised anxiety disorder in adults, 2024.
3. American Psychiatric Association. DSM-5-TR, 2022.
4. Spitzer RL et al. A brief measure for assessing generalized anxiety disorder: the GAD-7. Arch Intern Med. 2006.
5. NICE guideline NG191, 2024.
6. CDC. Mental Health Surveillance Report, 2024.

Medical Disclaimer: This article is for educational and informational purposes only and does not substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider regarding any medical condition or before making any decisions related to your health. Do not disregard or delay seeking professional advice based on information provided in this article.