Anxiety Disorders: Generalised Anxiety, Panic, and Phobias, A Doctor-Reviewed Pillar

9 min read Updated 2 June 2026 Medically reviewed

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Key takeaways

Anxiety becomes a disorder when it is out of proportion to the situation, persists beyond the trigger, lasts weeks to months, and substantially affects daily life. Most adults experience anxiety; a smaller proportion meet criteria for a clinical condition.
The National Mental Health Survey of India (NMHS 2015-16) found around 3.5 percent of Indian adults met criteria for an anxiety disorder. Globally, the WHO estimates around 3.6 percent annually. Underdiagnosis is significant.
The main anxiety conditions are generalised anxiety disorder (GAD), panic disorder, social anxiety disorder, specific phobias, and agoraphobia. OCD and PTSD were previously grouped here but are now classified separately.
Anxiety produces real physical symptoms (palpitations, breathlessness, chest tightness, tension, GI symptoms) that frequently first present to general physicians or cardiologists. Recognising the psychological substrate is the most consequential diagnostic step.
First-line treatments (CBT and SSRIs or SNRIs) work for most patients. CBT shows benefit in 6-12 sessions; medications take 2-4 weeks to start working, 6-8 weeks to near full effect. Benzodiazepines are reserved for short-term use due to dependence risk.

Medically reviewed by Dr. Boppana Sridhar (MBBS, MD Psychiatry, Australia-trained), Consultant Psychiatrist with 9+ years of clinical experience including CBT and DBT therapy for anxiety disorders, panic disorder, and phobias. NMC-registered, verifiable on the Indian Medical Register.

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

Anxiety is part of being human. The body's stress response evolved to help us anticipate and react to threats, and a degree of worry, vigilance, and physiological arousal in challenging situations is normal and adaptive. Anxiety disorders are a different category: states in which the response is disproportionate to the actual situation, persists when no real threat is present, and substantially disrupts daily life. This pillar covers the four most commonly encountered anxiety conditions in primary care (generalised anxiety, panic, social anxiety, specific phobias), how to recognise them, and what evidence-based treatment looks like. The six sub-pages below go deeper into each condition and into the practical questions about therapy, medication, and self-management.

What anxiety disorders are

Anxiety disorders are conditions characterised by persistent, excessive fear or worry that interferes with daily activities, work, relationships, or wellbeing. They are common, treatable, and frequently underdiagnosed. The current DSM-5 (American Psychiatric Association) and ICD-11 (World Health Organization) classifications recognise several distinct conditions under the anxiety disorders heading, with overlapping features but specific patterns and treatment implications.

What unites them is the combination of three elements: persistent fear or worry out of proportion to the actual situation, physiological arousal symptoms (palpitations, sweating, tension, breathlessness), and behavioural impact (avoidance of feared situations, reduced functioning, sleep disturbance, relationship strain). What distinguishes them is the focus of the anxiety: everyday matters in GAD, sudden surges in panic disorder, social situations in social anxiety, specific objects in phobias.

Anxiety vs normal worry, the bright lines

Three patterns help distinguish a clinical anxiety disorder from the ordinary anxiety most people experience.

Duration. Most situational anxiety resolves once the trigger passes (the exam ends, the meeting finishes, the result comes through). Anxiety disorders persist for weeks to months, often without a clear ongoing trigger. The DSM-5 criterion for generalised anxiety disorder is at least 6 months of excessive worry on most days.

Intensity. Normal worry is uncomfortable but functional; it motivates preparation, problem-solving, or precaution. Clinical anxiety is intense enough to impair function: difficulty concentrating, difficulty sleeping, avoidance of situations that would otherwise be navigable, physical symptoms severe enough to limit activity.

Pervasiveness. Situational anxiety is tied to specific contexts. Anxiety disorders often spread: a person worried about one specific thing finds the worry generalising to multiple areas of life, or finds themselves anxious in situations they previously handled with ease.

When two or three of these patterns are present and persisting, a medical consultation is reasonable. You do not have to wait until things are severe; earlier treatment generally produces better outcomes.

India context, tension and underdiagnosis

3.5%

of Indian adults met criteria for an anxiety disorder in the National Mental Health Survey of India (NMHS 2015-16) by NIMHANS. This translates to roughly 30 to 40 million people affected at any time. Underdiagnosis is substantial. Cultural framing as "tension" or somatic presentations (physical symptoms without naming the emotional state) delay recognition. The ICMR and NIMHANS have both documented this pattern.

Three India-specific factors shape anxiety disorder recognition and care.

Somatic presentation. Many Indian patients with anxiety disorders present first with physical symptoms (palpitations, fatigue, headache, gastric symptoms, dizziness) and are evaluated repeatedly for cardiac, gastrointestinal, or neurological causes before the anxiety substrate is recognised. This is not unique to India but is reinforced by the cultural framing.

Cultural vocabulary. The word "tension" covers a wide spectrum of experience that in clinical terms might be stress, anxiety, depression, or adjustment difficulty. Family members and patients may resist the term anxiety as carrying psychiatric weight that "tension" does not. Honouring the patient's language while expanding the clinical conversation usually works better than insisting on technical labels too early.

Access and stigma. The 1-2 psychiatrists per 100,000 access gap in India combined with stigma around psychiatric consultation means that primary care is the realistic entry point for most patients. Building anxiety disorder recognition and management into primary care is the practical path to closing the treatment gap.

The main types in this pillar

Four anxiety conditions are covered in detail across this pillar's sub-pages.

Condition	Core feature	Lifetime prevalence (approx.)
Generalised anxiety disorder (GAD)	Persistent excessive worry across multiple areas of life for 6+ months	3-5%
Panic disorder	Recurrent unexpected panic attacks plus fear of future attacks	2-4%
Social anxiety disorder	Intense fear of social situations or being judged in performance	5-12%
Specific phobias	Intense fear of specific objects or situations (heights, animals, injections, flying, blood)	7-12%
Agoraphobia	Fear of situations from which escape might be difficult or help unavailable	1-2%

Comorbidity is common; many patients meet criteria for more than one anxiety condition, or anxiety alongside depression or substance use. Treatment usually addresses the most disruptive condition first while monitoring the others.

Six in-depth sub-pages

Generalised anxiety disorder

The everyday-worry condition. Recognition, the 6-month duration criterion, physical symptoms, evidence-based treatment with CBT and SSRIs, and what an adequate medication trial looks like.

Read sub-page 1 → 2

Panic disorder and panic attacks

What a panic attack actually is, how it differs from cardiac and respiratory emergencies, the fear-of-future-attacks cycle, CBT for panic disorder, and the limited role of benzodiazepines.

Read sub-page 2 → 3

Social anxiety disorder

The intense fear of being judged in social or performance situations. Recognising it beyond ordinary shyness, the role of exposure-based CBT, medication options including beta-blockers for performance contexts.

Read sub-page 3 → 4

Specific phobias

Heights, flying, animals, injections, blood, enclosed spaces. The exposure therapy approach, when phobias warrant treatment versus avoidance, blood-injection-injury phobia specifics, and the limited need for ongoing medication.

Read sub-page 4 → 5

Anxiety, medication vs therapy

How to choose between CBT, SSRIs, SNRIs, and other options. The realistic timelines, side effects, what combination therapy looks like, and the patient factors that point toward one or the other as first choice.

Read sub-page 5 → 6

Managing anxiety without medication

The evidence on exercise, sleep, caffeine and alcohol moderation, mindfulness, and structured self-help CBT. What actually works for mild anxiety, and what should not replace clinical care for moderate or severe cases.

Read sub-page 6 →

Physical symptoms of anxiety

Anxiety is a whole-body experience. The same stress-response system that helped our ancestors run from predators activates the cardiovascular, respiratory, gastrointestinal, muscular, and endocrine systems in modern anxiety. The result is a recognisable cluster of physical symptoms that often bring patients to a doctor.

Cardiovascular: palpitations, racing heart, awareness of heart beat, occasional chest tightness or sharp chest pain
Respiratory: shortness of breath, feeling unable to take a full breath, sighing, hyperventilation symptoms (tingling in hands and face, light-headedness)
Gastrointestinal: nausea, loose stools or diarrhoea, dry mouth, butterflies or knotted feeling in stomach, reduced appetite
Muscular: tension in shoulders, neck, jaw, headaches (especially tension-type), trembling, restlessness
Sleep: difficulty falling asleep, frequent waking, unrefreshing sleep
Cognitive: difficulty concentrating, mind going blank, irritability, sense of being "on edge"
Other: sweating, dizziness, hot or cold flushes, fatigue

These symptoms are real, not "in the head." They reflect physiology working as designed in a context where the threat is internal rather than external. Acknowledging the physical reality of the symptoms while explaining the underlying mechanism is usually more useful than dismissing them.

The mind-body connection

Three practical implications follow from the physical-symptom reality of anxiety.

Cardiac evaluation often comes first. Palpitations and chest tightness are appropriate reasons to evaluate for heart problems, particularly in older adults or those with cardiac risk factors. The diagnosis of anxiety should usually wait until concerning organic causes have been reasonably excluded. ECG, basic blood work, sometimes thyroid testing or Holter monitoring may be appropriate.

Thyroid disorders mimic anxiety. Hyperthyroidism produces palpitations, tremor, restlessness, sleep disturbance, and weight loss that can be indistinguishable from anxiety. A TSH test is a reasonable part of anxiety workup, particularly when physical symptoms predominate.

Caffeine, alcohol, and recreational substances. Excessive caffeine produces anxiety-like physical symptoms. Alcohol initially reduces anxiety but worsens it during withdrawal and on subsequent days. Stimulants and some medications (decongestants, salbutamol, steroids, thyroid replacement at high doses) can produce or worsen anxiety. A medication and substance review is part of the workup.

Treatment overview, CBT, medication, lifestyle

Three first-line treatment categories with strong evidence behind them.

Cognitive behavioural therapy (CBT)

Time-limited, structured therapy focused on identifying and modifying anxious thought patterns and avoidance behaviours. Typically 8-16 sessions over 3-6 months. Strong evidence across all anxiety disorders. Effective in person, online, or as guided self-help.

SSRIs and SNRIs

Selective serotonin reuptake inhibitors (sertraline, escitalopram, fluoxetine) and serotonin-noradrenaline reuptake inhibitors (venlafaxine, duloxetine) are first-line medications. Take 2-4 weeks to begin working, 6-8 weeks to near full effect. Recommended duration 6-12 months minimum after symptom remission.

Lifestyle interventions

Regular physical activity (particularly aerobic), adequate sleep, caffeine and alcohol moderation, structured relaxation practice (breathing exercises, mindfulness, yoga). Sufficient for mild anxiety in many people, supportive for moderate to severe alongside other treatment.

Short-term symptom relief

Benzodiazepines (alprazolam, lorazepam) and beta-blockers (propranolol for performance anxiety) have specific short-term roles. Benzodiazepines carry dependence risk and are not first-line for ongoing treatment. The role is usually as a temporary bridge while CBT or SSRI takes effect.

When primary care is enough vs when specialist input helps

Primary care can effectively manage most mild to moderate anxiety disorders. The general physician or family doctor can:

Assess and diagnose using clinical criteria (DSM-5 or ICD-11) and validated screening tools
Rule out medical mimics (thyroid, cardiac, substance-induced)
Provide psychoeducation about the condition and treatment options
Initiate first-line medication (SSRI or SNRI) and manage dose titration
Refer to a psychologist or counsellor for CBT
Provide brief psychological intervention themselves
Monitor response and adjust treatment

Psychiatric referral is helpful for:

Severe symptoms substantially affecting function
Treatment-resistant cases (poor response to 2 adequate trials of first-line medication)
Complex comorbidity (anxiety plus depression with suicidal risk, or plus bipolar disorder, or plus significant substance use)
Diagnostic uncertainty
Patients with strong preference for specialist care
Specialised therapies (intensive CBT, exposure therapy, DBT for emotion regulation)

A note from Dr. Boppana Sridhar

The most common pattern I see in OPD is a patient who has been told their symptoms are "just stress" or "just tension" for years. They have often had an ECG, a TMT, sometimes an echo, all normal, and they have been reassured that their heart is fine. The reassurance is incomplete because no one named the actual condition. When I explain that what they have been experiencing is a recognised, treatable medical condition called generalised anxiety disorder or panic disorder, and that it responds to specific treatments with predictable timelines, the relief is visible. It is not in their head, and it is not a character flaw. It is a condition like hypertension or asthma, treatable with a combination of therapy and medication, and most people who get adequate treatment improve substantially. The mistake I most want to help patients and families avoid is dismissing the condition as something to push through. Treatment works. Earlier is better.

Frequently asked questions

What is the difference between anxiety and an anxiety disorder?

Anxiety is a normal human emotion that helps us anticipate and respond to threats. An anxiety disorder is when the anxiety response is out of proportion to the actual situation, persists when no real threat is present, lasts longer than the trigger warrants (usually weeks to months), or substantially affects work, relationships, sleep, or daily activities. The shift from normal anxiety to disorder is about intensity, duration, and impact, not the presence of worry itself. Most adults experience anxiety at some point; a smaller proportion experience anxiety at a level that meets criteria for a clinical condition.

How common are anxiety disorders in India?

The National Mental Health Survey of India (NMHS), conducted by NIMHANS in 2015-16, found that around 3.5 percent of Indian adults met criteria for an anxiety disorder, which would imply approximately 30 to 40 million people affected at any given time. Globally, the WHO estimates around 3.6 percent of the world's population experience an anxiety disorder in a given year. Underdiagnosis is significant in India, partly because anxiety often presents with physical symptoms (palpitations, fatigue, headache) and is described as 'tension' rather than recognised as a treatable medical condition.

What are the main types of anxiety disorders?

The main clinical anxiety conditions are generalised anxiety disorder (persistent excessive worry about everyday things), panic disorder (recurrent panic attacks plus fear of future attacks), social anxiety disorder (intense fear of social situations or being judged), specific phobias (intense fear of specific objects or situations like heights, animals, injections, flying), and agoraphobia (fear of situations from which escape might be difficult). DSM-5 and ICD-11 also recognise selective mutism and separation anxiety disorder. Obsessive-compulsive disorder (OCD) and post-traumatic stress disorder (PTSD) were previously grouped with anxiety but are now classified separately.

What physical symptoms come with anxiety?

Anxiety produces real physical symptoms because of the body's stress response. Common ones include palpitations or racing heart, shortness of breath or feeling unable to take a full breath, tightness in the chest, sweating, trembling, dizziness or light-headedness, muscle tension (particularly in the shoulders, neck, and jaw), headache, gastrointestinal symptoms (nausea, loose stools, dry mouth), fatigue, and sleep disturbance. These symptoms can be intense enough that patients first present to a cardiologist or general physician for cardiac evaluation. Once heart causes have been excluded, anxiety should be considered.

Can a general physician treat anxiety, or do I need a psychiatrist?

For mild to moderate anxiety disorders, a general physician or family doctor can effectively assess, diagnose, and manage the condition. First-line treatments include cognitive behavioural therapy (CBT) and SSRIs or SNRIs (medications like sertraline, escitalopram, venlafaxine). General physicians routinely initiate these. Psychiatrist referral is helpful for severe symptoms, treatment-resistant cases (poor response to two adequate trials of first-line medication), complex comorbidity, suicidal thoughts, or when more specialised therapies or medication adjustments are needed. The general physician usually remains the central point of care even when specialists are involved.

How long does anxiety treatment take to work?

Cognitive behavioural therapy typically shows benefit within 6 to 12 sessions over 3 to 6 months for most anxiety disorders. SSRIs and SNRIs usually take 2 to 4 weeks to show initial benefit and 6 to 8 weeks to reach near-full effect; doctors generally advise continuing medication for at least 6 to 12 months after symptoms have settled to reduce relapse risk. Some symptoms (sleep, physical tension, panic attacks) may improve faster than others (background worry, avoidance behaviour). Patience and continuity matter; switching treatments too quickly produces worse outcomes than completing an adequate trial.

Are anti-anxiety medications addictive?

It depends on the medication. SSRIs and SNRIs (the first-line drugs for most anxiety disorders) are not addictive. They can produce discontinuation symptoms if stopped abruptly, which is why tapering is recommended, but this is different from addiction. Benzodiazepines (lorazepam, alprazolam, clonazepam, diazepam) carry real dependence and addiction risk if used long-term and are typically reserved for short-term use (a few weeks) or specific situations rather than ongoing therapy. Buspirone, hydroxyzine, beta-blockers (for performance anxiety), and pregabalin are other non-addictive options used in specific contexts.

Can anxiety disorders be cured?

Many people achieve substantial improvement or full remission with treatment, particularly for time-limited anxiety triggered by life circumstances. For some, anxiety is more chronic and managed long-term like other chronic conditions, with periods of relative wellness and occasional flare-ups during stress. CBT in particular provides skills that continue to help even after formal therapy ends. The goal of treatment is not necessarily complete absence of anxiety (anxiety has functional value) but reduction of intensity, frequency, and impact to a level that no longer disrupts the person's life.

Medical disclaimer: This pillar page provides general health education and does not replace personalised consultation with a qualified mental health professional. Diagnosis and treatment of anxiety disorders 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, NHS, 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 anxiety disorders, panic disorder, and phobias. NMC-registered, verifiable on the Indian Medical Register.