What is Generalised Anxiety Disorder (GAD)? A Doctor-Reviewed Guide

10 min read Updated 2 June 2026 Medically reviewed

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Key takeaways

Generalised anxiety disorder (GAD) is persistent excessive worry across multiple areas of life for at least 6 months, accompanied by physical symptoms, and substantially affecting daily functioning. It is defined in DSM-5 and ICD-11 and is a treatable medical condition, not a personality trait.
GAD differs from everyday worry in duration (most days, 6+ months), scope (multiple areas of life), control (difficult to stop), and impact (substantial effect on sleep, work, relationships).
The GAD-7 is the most widely used screening questionnaire (developed by Spitzer et al, 2006). It is best used as a conversation starter with a doctor, not a self-diagnosis tool.
First-line treatments are cognitive behavioural therapy (CBT) and SSRIs or SNRIs. CBT typically 12-16 sessions over 3-6 months. Medications take 2-4 weeks to begin working, 6-8 weeks to near full effect, and are usually continued 6-12 months after remission.
India context: GAD often presents with physical symptoms (palpitations, fatigue, headache) and is dismissed as "tension" or seen as a personality trait, especially in women. Recognising it as a treatable condition is the most consequential first step.

Medically reviewed by Dr. Boppana Sridhar (MBBS, MD Psychiatry, Australia-trained), Consultant Psychiatrist with 9+ years of clinical experience in cognitive behavioural therapy, dialectical behaviour therapy, and the management of anxiety disorders including GAD. NMC-registered, verifiable on the Indian Medical Register.

Last updated: 2 June 2026 | Last medically reviewed: 2 June 2026

Generalised anxiety disorder is the diagnosis that often takes the longest to receive. The person worries, has done for as long as anyone can remember, sometimes for years. Family describes them as "always tense" or "such a worrier." The symptoms are often physical and have been investigated by cardiologists, gastroenterologists, and general physicians without a definitive answer. This guide explains what GAD actually is in clinical terms, how it differs from ordinary worry, how it is diagnosed and treated, and the India-specific patterns that delay recognition. The aim is to help you decide whether what you or someone you care about is experiencing fits this condition, and what to do next.

What GAD is

Generalised anxiety disorder is a clinical condition characterised by persistent and excessive worry about a wide range of everyday matters, lasting at least 6 months, accompanied by physical symptoms, and substantially affecting daily functioning. It is recognised in both the DSM-5 (American Psychiatric Association) and ICD-11 (World Health Organization). The ICD-10 code is F41.1.

Three features distinguish GAD from other anxiety conditions and from ordinary worry. First, the worry is generalised, meaning it spreads across multiple areas of life rather than being tied to one specific trigger (panic attacks, social situations, specific phobias all have more focused targets). Second, it is persistent rather than episodic: present on most days for at least 6 months. Third, it is excessive: out of proportion to the actual likelihood or severity of the feared outcome.

GAD is common and underdiagnosed. Lifetime prevalence is around 3 to 5 percent globally, with India-specific data from the NIMHANS National Mental Health Survey 2015-16 indicating roughly 3 to 4 percent of Indian adults meet criteria for any anxiety disorder including GAD. Women are affected approximately twice as often as men. Mean age of onset is in the 30s, though it can begin in adolescence or much later in life.

How GAD differs from ordinary worry

Most people worry sometimes. The line between everyday worry and GAD is drawn by four dimensions.

Duration

Ordinary worry comes and goes with the trigger. The exam ends, the worry settles. GAD persists on most days for at least 6 months, often without a clear ongoing trigger. The worry has been there longer than the situation that seemed to start it.

Scope

Ordinary worry has a focus: the meeting, the child's exam, the bank balance. GAD's worry shifts from one concern to another, often jumping between work, family, finances, health, small daily decisions, the future. When one worry resolves, another appears in its place. The person sometimes describes it as "worry looking for something to worry about."

Control

Ordinary worry can be set aside when needed: when working, when sleeping, when watching a film, the worry quietens. GAD worry is intrusive and difficult to switch off. Even during enjoyable activities, the background worry is present. The person often describes trying to stop worrying and being unable to.

Impact

Ordinary worry is uncomfortable but functional. GAD substantially affects sleep, work, relationships, or daily activities. The person may avoid commitments, struggle to concentrate, feel constantly tired, or have physical symptoms severe enough to limit activity.

The presence of all four dimensions over a sustained period is what shifts the picture from "anxious by nature" to a clinical condition that warrants assessment and treatment.

The diagnostic criteria

The DSM-5 (American Psychiatric Association, 2013, with the 2022 text revision DSM-5-TR) defines GAD by the following:

Excessive anxiety and worry, occurring more days than not, for at least 6 months, about a number of events or activities
The person finds it difficult to control the worry
The anxiety and worry are associated with at least 3 of the following 6 symptoms (only 1 required in children): restlessness or feeling keyed up, being easily fatigued, difficulty concentrating or mind going blank, irritability, muscle tension, sleep disturbance
The disturbance causes clinically significant distress or impairment in social, occupational, or other important areas of functioning
The disturbance is not attributable to substances, medications, or another medical condition
The disturbance is not better explained by another mental disorder

The ICD-11 criteria are similar in substance, with slightly different wording. A clinician familiar with mental health assessment can typically determine whether the criteria are met within one or two consultations, with a longitudinal view often clarifying the picture.

Common symptoms

Symptoms can be grouped into psychological and physical, though most patients have both.

Psychological symptoms

Persistent excessive worry, feeling on edge, sense of impending bad outcomes, difficulty concentrating, irritability, mind racing or going blank, hypervigilance, difficulty making decisions, intrusive thoughts about possible problems.

Muscular symptoms

Muscle tension (particularly in shoulders, neck, jaw), tension headaches, restlessness, trembling, jaw clenching or teeth grinding, twitches.

Sleep symptoms

Difficulty falling asleep, mind racing at bedtime, frequent waking, unrefreshing sleep, early morning waking with anxiety, daytime tiredness despite spending adequate time in bed.

Gastrointestinal symptoms

Nausea, loose stools or diarrhoea, dry mouth, butterflies or knotted feeling in stomach, reduced appetite, indigestion that does not respond to standard treatment.

Cardiovascular symptoms

Palpitations, awareness of heart beat, occasional chest tightness, light-headedness, sweating, hot or cold flushes. These often bring patients to a cardiologist before GAD is recognised.

General symptoms

Fatigue, low energy, frequent feeling of being unwell, susceptibility to minor infections, irritability with family and colleagues, withdrawal from social activities.

GAD compared with other anxiety conditions

The other anxiety conditions in this pillar share some features with GAD but differ in important ways. Recognising the right diagnosis matters because some treatment specifics differ.

Condition	Key distinction from GAD	Treatment approach
GAD	Persistent worry across many areas of life, 6+ months	CBT, SSRIs/SNRIs first-line
Panic disorder	Recurrent sudden panic attacks with fear of future attacks; worry is more episodic and tied to attacks	CBT specifically for panic, SSRIs, gradual exposure to feared situations
Social anxiety disorder	Worry specifically about social or performance situations, fear of judgement	CBT with exposure component, SSRIs, sometimes beta-blockers for performance contexts
Specific phobia	Intense fear of specific objects or situations (heights, animals, injections, flying)	Exposure therapy, sometimes short-term medication for unavoidable triggers
Adjustment disorder with anxiety	Anxiety in response to identifiable life stressor, within 3 months of stressor, expected to resolve once stressor passes	Brief therapy, support, sometimes short-term medication
Major depression with anxiety	Anxiety alongside low mood, loss of interest, anhedonia, possible suicidal thoughts	SSRIs or SNRIs treat both, CBT helpful, severity-dependent

Comorbidity is common. A patient may have GAD plus depression, or GAD plus panic disorder, or GAD plus social anxiety. Treatment usually addresses the most disruptive condition first while monitoring the others.

The GAD-7 screening tool

7 items

The GAD-7 is a brief validated screening tool developed by Spitzer and colleagues in 2006, widely used in primary care and research worldwide. It asks 7 questions about anxiety symptoms over the past 2 weeks. Scores range from 0 to 21. A score of 5 to 9 suggests mild anxiety, 10 to 14 moderate, and 15 or above severe.

The GAD-7 has good sensitivity and specificity for GAD when used in primary care settings. It is endorsed by NICE, the NHS, and the American Psychiatric Association as a reasonable initial screening tool. Versions are available in many languages including several Indian regional languages through validated translation projects.

The important practical caveats:

The GAD-7 is a screening tool, not a diagnostic one. A high score does not confirm GAD; a low score does not rule it out. Clinical assessment by a doctor is needed for diagnosis.
The score depends on the past 2 weeks; chronic conditions may vary. A single low score during a good week does not exclude GAD.
Self-administering the questionnaire and then making treatment decisions without medical input is not recommended. The score should be a starting point for a conversation with a doctor.
Some symptoms overlap with depression, sleep disorders, and physical conditions; interpretation requires the full picture.

If you wish to complete the GAD-7, validated versions are available through the NHS and the NIMH. Take the result to a doctor for context rather than acting on it alone.

Causes and risk factors

GAD is multifactorial. No single cause is identified for any individual patient; the condition results from the interaction of multiple contributors.

Genetic vulnerability. Family history of anxiety disorders is the strongest single risk factor. Twin studies suggest heritability around 30 to 40 percent for GAD. The genetic predisposition affects how the brain's threat-response system is wired but does not by itself produce the condition.

Sex. Women are diagnosed roughly twice as often as men. The reasons are not fully understood and include hormonal, social, and possibly diagnostic factors (women may be more likely to present and be assessed).

Stressful life events. Traumatic events, particularly in childhood, are associated with higher GAD risk in adulthood. Chronic stress (caregiving, financial stress, relationship stress, job stress) can precipitate or worsen GAD in vulnerable individuals.

Personality traits. Perfectionism, high need for control, intolerance of uncertainty, and tendency to anticipate negative outcomes are personality features that overlap with GAD risk.

Medical conditions. Thyroid disorders (particularly hyperthyroidism), chronic pain, cardiovascular disease, and chronic respiratory conditions are associated with higher anxiety rates. Substance use including alcohol, caffeine, and stimulants can cause or worsen anxiety symptoms.

The cause does not change treatment substantially. CBT and SSRIs are effective regardless of presumed underlying cause. Where a clear medical mimic exists (hyperthyroidism, caffeine intoxication), treating it should come first.

India context, the "constantly worrying mother" template and the somatic presentation

Three Indian-specific patterns shape GAD recognition and care.

The "always tense" personality framing. In many Indian families, GAD presents as a long-standing pattern of worry that is treated as a personality trait rather than a condition. The "constantly worrying mother" who frets about every detail of children's lives, husband's work, household management, and extended family obligations is a recurring template. Family members often respond with frustration or attempts to reassure rather than recognising that the pattern may be a treatable condition.

Somatic presentation. Many Indian patients with GAD present first to general physicians or cardiologists with physical symptoms: palpitations, breathlessness, "gas trouble," headaches, fatigue, body aches. Cardiac workup is often normal. Patients may have had multiple normal investigations across years before the underlying anxiety is recognised. The Indian medical lexicon of "tension" covers what in clinical terms is often GAD.

Specific worry content. Indian GAD often centres on culturally specific concerns: children's exam performance and career prospects, marriage arrangements, financial security for joint family members, elderly parent care, daughter's safety, son's professional advancement. The content of the worry is culturally shaped; the underlying disorder is the same.

Recognition is the most consequential step. Once GAD is named accurately, treatment options become available. The 2 million NMHS estimate of untreated anxiety disorders in India reflects how often this step is missed.

Cognitive behavioural therapy

CBT is one of the two first-line treatments for GAD (medication is the other; combination therapy is also reasonable). It typically involves 12 to 16 weekly sessions over 3 to 6 months, with a structured agenda focused on:

Psychoeducation: understanding what GAD is, the role of worry in maintaining anxiety, and how the body's stress response works
Identifying anxious thoughts: noticing the specific worry content, the catastrophic predictions, the "what-if" thinking patterns
Cognitive restructuring: testing the accuracy of the anxious thoughts, generating alternative explanations, weighing evidence
Worry control techniques: scheduled worry time, problem-solving for productive worries, acceptance for unproductive ones
Relaxation training: progressive muscle relaxation, breathing exercises, mindfulness-based approaches
Behavioural experiments: testing avoidance behaviours, gradually facing situations that have been avoided due to anxiety
Relapse prevention: identifying early warning signs and skills to use when symptoms return

Evidence for CBT in GAD is strong, with effects comparable to medication and the additional advantage that benefits often persist after therapy ends. CBT can be delivered in person, online via video, or as guided self-help with workbooks; in-person is generally preferred for moderate to severe presentations. In India, qualified clinical psychologists are concentrated in larger cities; access in smaller cities and rural areas is improving but still limited.

Medication options

Several medications have evidence for GAD. The choice depends on the patient's preference, side-effect tolerance, comorbidities, and prior treatment history.

SSRIs (first line). Sertraline, escitalopram, paroxetine, and fluoxetine are commonly used. They typically take 2 to 4 weeks to begin working and 6 to 8 weeks to reach near-full effect. Recommended duration is at least 6 to 12 months after symptoms have settled, sometimes longer. Common side effects include initial gastrointestinal symptoms (nausea, loose stools) in the first week or two, sexual dysfunction in some patients, and weight changes. Discontinuation should be gradual to avoid discontinuation symptoms.

SNRIs. Venlafaxine and duloxetine are evidence-based alternatives. Onset and side-effect profiles are similar to SSRIs, with venlafaxine sometimes more energising and duloxetine useful when chronic pain coexists. Blood pressure should be monitored on higher doses of venlafaxine.

Pregabalin. Approved for GAD in many countries with onset of action faster than SSRIs (within a week). Side effects include dizziness, sedation, and weight gain. Has some abuse potential and is controlled in some jurisdictions.

Buspirone. Specifically licensed for GAD in some countries; partial agonist at serotonin receptors. Onset of action over 2 to 4 weeks, generally well tolerated, no dependence risk. Less commonly used in India.

Benzodiazepines (alprazolam, lorazepam, clonazepam, diazepam). Effective for short-term symptom control but carry real dependence and tolerance risks with long-term use. Typically reserved for short-term bridge use (a few weeks) while CBT or SSRI takes effect, or for specific high-anxiety situations. Not recommended for ongoing GAD treatment.

Beta-blockers (propranolol). Useful for physical symptoms of anxiety (palpitations, tremor) but do not treat the underlying worry. Sometimes used as needed before specific high-anxiety situations.

Self-help strategies

For mild GAD or as supportive measures alongside formal treatment, several evidence-based self-help strategies help.

Regular physical exercise: aerobic exercise (brisk walking, swimming, cycling) for at least 30 minutes most days reduces anxiety symptoms. Evidence is comparable to mild antidepressant effect.
Sleep optimisation: consistent sleep and wake times, 7 to 9 hours nightly, reducing screen time before bed, addressing sleep apnoea if symptoms suggest it.
Caffeine moderation: caffeine produces or worsens anxiety symptoms in many people. A trial reduction to under 200 mg daily (roughly 2 cups of brewed coffee) is reasonable.
Alcohol moderation: alcohol initially reduces anxiety but worsens it during withdrawal and subsequent days. Cutting back generally improves anxiety over weeks.
Mindfulness and meditation: structured mindfulness-based stress reduction (MBSR) and meditation practices have evidence for anxiety reduction. Apps like Headspace, Calm, and Insight Timer provide accessible introductions; in-person classes can deepen practice.
Yoga and pranayama: evidence for anxiety reduction is moderate but consistent across studies. Particularly accessible in the Indian context.
Structured worry time: setting aside 20 to 30 minutes daily specifically to worry, then deliberately setting it aside the rest of the day. Counter-intuitive but evidence-supported.
Social support: staying connected with friends and family, sharing concerns rather than holding them privately. Social withdrawal worsens GAD.

These strategies are most helpful for mild GAD and as supportive measures. For moderate to severe GAD, they should not replace formal treatment but can usefully complement it.

When to see a doctor

Reasonable thresholds for consulting a doctor about possible GAD:

Worry present on most days for 4 to 6 weeks or more
Worry that you find difficult to control or set aside
Substantial effect on sleep, work, relationships, or daily activities
Physical symptoms (palpitations, fatigue, muscle tension, gastrointestinal) that have been worked up and have no clear medical explanation
Family member or friend has expressed concern
You are using alcohol, sleeping pills, or other substances to manage anxiety
You feel you are not coping with usual life demands

You do not have to wait until things are severe. Earlier consultation generally produces better outcomes. Most adults can self-refer to a general physician or family doctor; specialist psychiatric input is usually accessed via referral from the GP or by self-referral in some health systems and through private practice.

Red flags warranting urgent assessment

Thoughts of self-harm or suicide.
New onset of severe anxiety with sudden change in physical or cognitive function (consider stroke, intoxication, medical emergency).
Anxiety with unexplained weight loss, palpitations, and heat intolerance (consider hyperthyroidism).
Anxiety following recent head injury, particularly with confusion or balance problems.
Anxiety accompanied by hallucinations, delusions, or severe disorganisation (consider psychotic illness).
Severe panic-like episodes with chest pain, particularly in those with cardiac risk factors (rule out cardiac cause first).
Anxiety with new and persistent neurological symptoms (numbness, weakness, vision changes).
Severe anxiety with substance use that is escalating or causing harm.
Anxiety in a pregnant or postpartum woman with thoughts about harm to self or baby.
Sudden severe worsening of long-standing anxiety with no clear trigger.

A note from Dr. Boppana Sridhar

The patient I see most often with GAD is a woman in her 30s or 40s who has been worrying for as long as she can remember and has been told by family for years that she just needs to relax. She has often had every cardiac and gastrointestinal investigation, all normal, and has been prescribed multivitamins, antacids, and proton pump inhibitors for symptoms that did not respond. By the time she reaches my OPD, she has often spent years wondering what is wrong with her. The relief when GAD is named accurately, and when she understands that it is a recognised, treatable medical condition rather than a character flaw, is real. Treatment options exist with predictable timelines. Most patients improve substantially with adequate treatment. The mistake I want families to stop making is treating the condition as a personality issue. It is not. And the mistake I want patients to stop making is dismissing the option of help because the symptoms are "not that bad." They may not be that bad yet, but living for years with untreated GAD is not the same as managing it well; the cost compounds.

Frequently asked questions

What exactly is generalised anxiety disorder?

Generalised anxiety disorder (GAD) is a clinical condition characterised by persistent and excessive worry about a wide range of everyday matters, lasting at least 6 months and accompanied by physical symptoms like restlessness, fatigue, difficulty concentrating, muscle tension, and sleep disturbance. The worry is difficult to control and substantially affects work, relationships, or daily functioning. GAD is defined formally in both the DSM-5 (American Psychiatric Association) and ICD-11 (World Health Organization). It is treatable, with strong evidence for cognitive behavioural therapy and SSRI or SNRI medications.

How is GAD different from just being a worrier?

Most people worry sometimes. GAD differs in four ways. First, duration: worry is present on most days for at least 6 months, not just during stressful periods. Second, scope: worry covers multiple areas of life (work, family, health, finances, small daily decisions) rather than one specific concern. Third, control: the person finds the worry difficult to stop or set aside, even when they recognise it as out of proportion. Fourth, impact: the worry is accompanied by physical symptoms and substantially affects sleep, work, relationships, or daily activities. Being a 'worrier' as a personality trait is not the same as GAD; GAD is a treatable medical condition.

What are the main symptoms of GAD?

Psychological symptoms include persistent excessive worry, feeling 'on edge' or restless, difficulty concentrating or mind going blank, irritability, and a sense of impending bad outcomes. Physical symptoms include muscle tension (particularly in shoulders, neck, jaw), fatigue, sleep disturbance (difficulty falling asleep or unrefreshing sleep), headaches, gastrointestinal symptoms (nausea, loose stools, dry mouth), palpitations, sweating, and trembling. The combination of both psychological and physical symptoms is characteristic. Many patients present first with the physical symptoms and are evaluated for other conditions before GAD is recognised.

What is the GAD-7 and should I take it?

The GAD-7 is a 7-item screening questionnaire developed by Spitzer and colleagues in 2006, widely used in primary care and research. It asks about anxiety symptoms over the past 2 weeks. A score of 5 to 9 suggests mild anxiety, 10 to 14 moderate anxiety, and 15 or above severe anxiety. The GAD-7 is best used as a conversation starter with a doctor rather than a self-diagnosis tool. A high score does not confirm GAD; a low score does not rule it out. If you are concerned about your anxiety, a consultation with a doctor who can interpret the screening result alongside your full history is more useful than self-administering the test alone.

What causes generalised anxiety disorder?

GAD is multifactorial. Risk factors include family history (genetic vulnerability), being female (women are diagnosed roughly twice as often as men), exposure to stressful or traumatic life events, certain personality traits (perfectionism, high need for control), chronic medical conditions, and substance use including alcohol and caffeine. No single cause produces GAD; it is the interaction of genetic predisposition with life experience and current circumstances. The cause does not change the treatment substantially; CBT and medications work regardless of presumed cause.

How is GAD treated?

First-line treatments are cognitive behavioural therapy (CBT) and medications, specifically SSRIs (sertraline, escitalopram, fluoxetine) or SNRIs (venlafaxine, duloxetine). CBT typically involves 12 to 16 sessions over 3 to 6 months and produces benefit comparable to medication with effects that often persist after therapy ends. SSRIs and SNRIs typically take 2 to 4 weeks to show initial benefit and 6 to 8 weeks to reach near-full effect; recommended duration is at least 6 to 12 months after symptoms have settled. For some patients, combination therapy (CBT plus medication) produces better outcomes than either alone. Benzodiazepines have a limited role due to dependence risk; pregabalin is sometimes used as an alternative.

Can GAD be cured or does it last forever?

GAD has variable course. Many patients achieve substantial improvement or remission with treatment, particularly when triggers are time-limited. Others experience a more chronic course with periods of relative wellness and flare-ups during stress. CBT in particular provides skills that continue to help even after formal therapy ends. The realistic goal of treatment is not necessarily complete absence of anxiety (some baseline level is normal and functional) but reduction of intensity and impact to a level that does not disrupt daily life. With adequate treatment, most patients can live functionally and meaningfully.

When should I see a doctor about my anxiety?

See a doctor if anxiety has been present on most days for 4 to 6 weeks or more, is difficult to control, substantially affects your work, sleep, relationships, or daily activities, or is accompanied by significant physical symptoms. Urgent assessment is warranted if anxiety includes thoughts of self-harm or suicide, panic attacks that are severe or frequent, or a sudden severe worsening that does not fit your usual pattern. A general physician or family doctor is usually the right first contact; specialist psychiatric input is helpful for severe, treatment-resistant, or complex cases. You do not have to wait until things are severe; earlier treatment generally produces better outcomes.

Medical disclaimer: This article provides general health education and does not replace personalised consultation with a qualified mental health professional. Diagnosis and treatment of GAD depend on individual presentation, severity, comorbidity, and patient preference. If you are currently in distress or having thoughts of self-harm, please contact one of the crisis helplines listed at the top of this page or local emergency services.

About the author

247healthcare.blog editorial team writes general health and preventive medicine content reviewed by qualified doctors. Every article is fact-checked against current guidance from NICE, NIMH, APA, WHO, ICMR, NIMHANS, and peer-reviewed mental health literature before publication.

About the medical reviewer

Dr. Boppana Sridhar (MBBS, MD Psychiatry, Australia-trained) is the Consultant Psychiatrist and department lead for Psychiatry and Psychology at Vivekananda Hospital, Begumpet, Hyderabad. He has 9+ years of clinical experience including cognitive behavioural therapy (CBT), dialectical behaviour therapy (DBT), and the management of generalised anxiety disorder, panic disorder, and other anxiety conditions. NMC-registered, verifiable on the Indian Medical Register.