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Symptom guide

Panic attack: symptoms, what helps and when to get help

A panic attack is a sudden surge of intense fear with strong physical symptoms such as a pounding heart, breathlessness and trembling. It feels like a medical emergency, but the attack itself does not cause physical harm. The harder question is the first time one happens, when heart, lung and thyroid problems also need to be kept in mind.

Last checked: 2026-10-03

Key facts

At a glance.

  • Duration

    The NHS says most panic attacks last between 5 and 20 minutes, and some have been reported to last up to an hour.

  • Not dangerous

    The NHS says panic attacks are frightening but not dangerous: an attack will not cause physical harm, and it is unlikely you will be admitted to hospital with one.

  • Symptoms overlap

    The NHS warns that most panic symptoms can also be symptoms of other conditions, so you may not always be having a panic attack; a racing heartbeat can come from very low blood pressure, for example.

  • Self-referral

    The NHS says you can refer yourself directly to a talking therapies service for CBT-based treatment, in England; you can also see a GP.

  • Diagnosis of panic disorder

    The NHS says panic disorder may be diagnosed if you have regular, unexpected panic attacks followed by at least a month of continuous worry about having further attacks.

What a panic attack feels like

The NHS describes a rush of intense mental and physical symptoms that can come on very quickly and often for no apparent reason. The symptoms it lists are a racing heartbeat, feeling faint, sweating, nausea, chest pain, shortness of breath, trembling, hot flushes, chills, shaky limbs, a choking sensation, dizziness, numbness or pins and needles, dry mouth, a feeling of dread or fear of dying, a churning stomach, tingling in the fingers and feeling disconnected from the body.

The NHS anxiety page adds a feeling of losing control, and breathing very quickly, and repeats that an attack usually lasts 5 to 20 minutes. The NHS recommends slow, deep breathing, and calming breathing exercises, as practical first steps.

Panic or something else?

The first attack is the one that most needs care. The NHS says that most panic symptoms can occur in other conditions. The table lists the main alternatives and the features that make them more likely.

Conditions that can resemble a panic attack
ConditionFeatures that point towards itSource note
Heart attackPressure or squeezing in the chest, pain spreading to arm, neck or jaw, sweating, nausea, pain that does not settleNHS: call 999 for chest pain with sweating, sickness, light-headedness or breathlessness
Arrhythmia such as atrial fibrillationIrregular, pounding or racing heartbeat that starts and stops, tiredness, dizzinessNICE CKS lists arrhythmias and anxiety among causes of palpitations
Overactive thyroidWeight loss, heat sensitivity, tremor, nervousness and irritability, fast heartbeatNHS lists these symptoms
Low blood sugarHunger, sweating, shaking, tingling lips, palpitations, in a person with diabetesNHS lists these symptoms
Asthma or other lung problemsWheeze, cough, a tight chest, triggers such as exercise or cold airNHS describes asthma symptoms
Pulmonary embolismSudden breathlessness, chest pain worse on breathing in, possible calf swellingNHS lists coughing up blood and a very fast heartbeat as emergencies
Generalised anxiety disorderWorry that is present most of the time rather than in sudden burstsNHS says it is more likely if you feel anxious most of the time and it affects everyday life

Red flags: when to treat it as an emergency

The NHS advice for chest pain is to call 999 for sudden pain or discomfort in the chest that does not go away, pain spreading to the arms, neck, jaw, stomach or back, or chest pain with sweating, sickness, light-headedness or breathlessness. If you have never had a panic attack before, or the symptoms feel different from usual attacks, that advice takes priority over assuming it is panic.

For breathlessness the NHS says to call 999 for severe difficulty breathing where you are gasping or cannot get words out, a tight or heavy chest, pain spreading to the arms, back, neck and jaw, blue, grey or very pale lips or skin, or sudden confusion. NHS atrial fibrillation advice says to call 999 if you have a fast or irregular heartbeat with chest pain, shortness of breath, sweating, sickness, fainting, a severe headache, weakness or numbness on one side, blurred vision or loss of sight, or confusion or difficulty speaking.

The NHS also asks anyone in a mental health crisis, or supporting someone who is, to seek urgent help, and Samaritans can be contacted on 116 123 at any time.

  • Chest pain or pressure that does not ease, or spreads to arm, jaw or back.

  • Severe breathlessness, gasping, blue or grey lips.

  • Fainting, weakness on one side, slurred speech or confusion.

  • A first-ever attack with symptoms unlike anything before.

  • Thoughts of self-harm or suicide.

  • Attacks happening many times a week or leading you to avoid daily life.

What the GP asks and examines

The NHS says a GP will ask you to describe your symptoms, how often you get them and how long you have had them, and may carry out a physical examination to rule out other conditions. Panic disorder is diagnosed when attacks are regular and unexpected and followed by at least a month of continuous worry or concern about further attacks.

Questions also cover caffeine, alcohol, drugs, medicines, stress, bereavement or trauma, and family history. The NHS says panic disorder is thought to be linked to a combination of things, including a traumatic or very stressful life experience such as bereavement, having a close family member with panic disorder, and imbalance of chemical messengers in the brain.

Where the heartbeat is a concern, CKS describes a 12-lead ECG ideally during an episode, blood tests for causes such as thyroid disease or anaemia, and further monitoring depending on findings.

What to do during an attack

The NHS suggests: stay where you are if possible, breathe slowly and deeply, remind yourself that the attack will pass, focus on positive, peaceful and relaxing images and remember it is not life threatening. Its anxiety page advises calming breathing exercises or meditation and not avoiding situations that make you anxious, but building up time in them gradually.

The NHS advises not to try to do everything at once, to set small achievable targets and to avoid using alcohol, cigarettes, gambling or drugs to relieve anxiety, because they can contribute to poor mental health. It adds that avoiding sugary food and drinks, caffeine and alcohol, and stopping smoking, may help prevent further attacks.

Treatment for panic disorder

The NHS says talking therapies and medicine are the main treatments. Cognitive behavioural therapy teaches ways to keep calm during an attack and to change patterns of behaviour; you can refer yourself to a talking therapies service in England, or be referred by a GP. Where appropriate, a doctor may prescribe a selective serotonin reuptake inhibitor (SSRI) or, if that is unsuitable, a tricyclic antidepressant, or in some cases an anti-epilepsy medicine such as pregabalin or, when anxiety is severe, clonazepam.

The NHS says antidepressants can take 2 to 4 weeks to start working and up to 8 weeks to work fully, and that you should keep taking them even if you feel they are not working and only stop on a GP's advice. If symptoms do not improve after CBT, medicine and support groups, a GP may refer to a psychiatrist or clinical psychologist.

The NHS says untreated panic disorder can escalate and raises the risk of agoraphobia, other phobias and alcohol or drug problems, and that it can affect the ability to drive, in which case the DVLA must be informed about a condition that could affect driving.

Who to see

A GP for a first attack or when attacks are recurring; an NHS talking therapies service, which adults can contact directly; support organisations such as Anxiety UK, Mind, No Panic and Triumph Over Phobia, all of which the NHS lists; and a mental health specialist if treatment in primary care has not helped. Children with signs of panic disorder should see a GP, who will examine them to rule out physical causes and may refer for specialist assessment.

Frequently asked

Questions people ask.

Quick, plain-English answers to the questions we hear most.

  • How long does a panic attack last?

    The NHS says most last between 5 and 20 minutes, though some have been reported to last up to an hour.

  • Can a panic attack hurt me?

    The NHS says panic attacks are frightening but not dangerous. An attack will not cause you any physical harm, and it is unlikely you will be admitted to hospital if you have one.

  • How do I know it is not a heart attack?

    You cannot always tell, particularly the first time. The NHS says to call 999 for chest pain that does not go away, spreads to the arm, neck or jaw, or comes with sweating, sickness, light-headedness or breathlessness.

  • What should I do when one starts?

    The NHS advises staying where you are if possible, breathing slowly and deeply, reminding yourself that the attack will pass and that it is not life threatening, and focusing on calming images.

  • Do I need medication?

    Not necessarily. The NHS says talking therapies and medicine are the main treatments, depending on symptoms. Where medicine is used it is usually an SSRI antidepressant, which takes 2 to 4 weeks to start working.

  • Can I refer myself for therapy?

    Yes, in England. The NHS says you can refer yourself directly to a talking therapies service for treatment based on cognitive behavioural therapy, or see a GP who can refer you.

  • What causes panic disorder?

    The NHS says the exact cause is not fully understood but is thought to be linked to stressful or traumatic experiences such as bereavement, having a close relative with panic disorder, and an imbalance of chemical messengers in the brain.

  • Can panic attacks affect driving?

    The NHS says panic disorder may affect your ability to drive, and the law requires you to inform the DVLA about a medical condition that could affect driving.

  • Does caffeine make panic worse?

    The NHS says avoiding sugary food and drinks, caffeine and alcohol, and stopping smoking, may help prevent further attacks, because they can all make attacks worse.

Where this comes from

Sources and checking.

This guide is for information, not medical advice.

Your GP or consultant knows your history and can tell you which parts apply to you. If your symptoms are severe, rapidly worsening, or come with red-flag features, seek urgent medical care. Figures and availability change, so treat them as a guide and confirm with the provider.

Published 2026-10-03, next review 2027-10-03.