Anxiety and panic with breathlessness

01OverviewDefinition, clinical context and the essential points that orientate the chapter.

Panic is a sudden surge of fear with symptoms such as racing heart, chest tightness, dizziness, tingling, trembling and a sense of impending death. Breathlessness is a powerful trigger because air hunger resembles immediate threat. The response is real and involuntary. Explaining the cycle can reduce shame and gives several treatment points: physiology, interpretation, breathing pattern, avoidance and caregiver response.

A changed episode still needs medical assessment. Ask about onset, chest pain, sputum, fever, haemoptysis, wheeze, syncope, unilateral symptoms and medicine changes. Measure breathing, saturation, pulse, temperature and consciousness and examine the chest. A patient with a history of panic can still develop embolism or infection; a patient with hypoxaemia can also benefit from calm coaching while oxygen and definitive treatment begin.

During a typical episode, reduce stimulation and use one calm person. Encourage supported forward lean, cool facial airflow and a gentle longer exhalation rather than repeated maximal inhalation. Use grounding to identify sights or contact with the chair and name the episode as frightening but manageable based on the agreed plan. Avoid crowding, contradictory instructions and statements that there is nothing wrong.

Between episodes, create a formulation. What sensation starts the cycle? What does the person predict will happen? Which activity is avoided? What reassurance or emergency response follows? Physiotherapy, occupational therapy and pulmonary rehabilitation can teach recovery positions, pacing and energy conservation. Brief CBT methods test catastrophic predictions and rebuild activity within safe physiological limits.

Medicines have different purposes. A palliative low-dose opioid may reduce persistent air hunger after disease treatment and non-drug care. Benzodiazepines may help severe anxiety but evidence for breathlessness itself is limited and toxicity increases with opioids or carbon-dioxide retention. For persistent panic disorder or generalised anxiety, an SSRI such as sertraline may help over several weeks, with early review for activation, hyponatraemia and bleeding.

Carers require their own plan. Teach them to stay, use the fan and one breathing prompt, administer only the prescribed rescue and call for red flags or failure to recover. Ask about exhaustion and fear. Review after each crisis and amend the plan if episodes change. Explicitly document hospital, ventilation and CPR decisions separately so the presence of panic does not lead either to unwanted escalation or undertreatment.

Key points

Validate the sensation without assuming its cause: panic can intensify breathlessness, and respiratory pathology can trigger genuine panic simultaneously.
First-line crisis care is presence, upright supported posture, cool facial airflow, one calm speaker and a slow exhalation-focused breathing pattern.
Use short grounding prompts: name what is happening, orient to the room, relax shoulders and match activity to a safe recovery position.
After recovery, map triggers, thoughts, bodily sensations, behaviour, duration, rescue use and how carers respond; identify what differs from medical emergencies.
Breathing retraining, cognitive behavioural strategies, pulmonary rehabilitation, pacing and graded re-engagement are first-line continuing treatments.
A low-dose opioid may treat refractory breathlessness, not panic itself; an anxiolytic may address severe panic, not hypoxaemia or obstruction.
Lorazepam can be used as carefully prescribed rescue for severe recurrent anxiety when non-drug measures fail, but respiratory and dependence risks require review.
An SSRI can treat persistent panic or anxiety over weeks; explain initial activation, interactions and delayed benefit and provide follow-up.
The gold-standard plan teaches the patient and carer how to distinguish expected episodes from red flags and specifies techniques, medicines, call route and escalation ceiling.

02AetiologyUnderlying causes, associations and risk factors, with why each one matters.

Breathlessness threat learning

Previous suffocating episodes condition bodily sensations, places and activities as danger cues, triggering anticipatory panic before physiological demand rises.

Illness uncertainty

Fear of dying, conflicting information, absent crisis plans and witnessing another person's respiratory death can heighten vigilance and catastrophic interpretation.

Psychiatric vulnerability

Past panic disorder, trauma, depression, generalised anxiety and substance dependence can recur or intensify during advanced illness.

Medicine and metabolic effects

Corticosteroids, bronchodilators, withdrawal, hyperthyroidism, hypoglycaemia, hypoxia and hypercapnia can produce marked anxiety, tremor, palpitations and agitation.

03PathophysiologyThe causal sequence from the underlying abnormality to symptoms and harm.

1
Threat-system activation
Perceived suffocation activates sympathetic arousal, raising heart rate, muscle tension, attention to breathing and urge to escape.
2
Inefficient hyperventilation
Rapid upper-chest breathing increases dead-space ventilation, dizziness and tingling and can worsen dynamic hyperinflation in obstructive disease.
3
Interoceptive amplification
Attention narrows onto chest sensations and normal fluctuations are interpreted as evidence of imminent suffocation or death.
4
Avoidance deconditioning
Avoiding movement prevents corrective learning and reduces fitness, making later exertion more breathless and apparently confirming the feared prediction.
5
Social feedback loop
Caregiver alarm, repeated emergency calls and urgent reassurance can unintentionally reinforce the belief that every sensation signals catastrophe.

04Clinical features and red flagsSymptoms, examination findings, patterns of presentation and time-critical warnings.

Typical panic episode

Abrupt fear, palpitations, trembling, tingling, dizziness and rapid breathing peaks over minutes and resembles prior episodes after emergency features are excluded.

Anticipatory anxiety

Persistent fear of the next episode leads to monitoring, sleep loss, avoidance and repeated checking between acute attacks.

Dysfunctional breathing

Upper-chest effort, frequent sighing, breath stacking and rapid inhalation contribute symptoms despite adequate oxygenation.

Physiological trigger

Wheeze, secretion, exertional desaturation, pain or fluid initiates fear and requires both cause treatment and panic support.

Sedative accumulationRed flag

Slurred speech, unsteady gait, prolonged sleep and slowed breathing after rescue use indicates medicine harm rather than successful calming.

Broader psychological illness

Daily worry, anhedonia, trauma symptoms, suicidal thought or substance use outside episodes needs comprehensive mental-health assessment.

Red flags requiring action

A first or changed panic-like episode with hypoxaemia, focal signs, pleuritic pain, haemoptysis or syncope requires urgent cardiopulmonary evaluation.
Falling respiratory effort, drowsiness or carbon-dioxide retention is respiratory failure, not resolution of anxiety.
Suicidal intent, inability to remain safe, severe depression or requests to hasten death requires direct same-day risk assessment.
Benzodiazepine plus opioid, alcohol, gabapentinoid or hypercapnic lung disease materially increases sedation and respiratory risk.
Increasing unsupervised rescue use, lost tablets or demands for early supply may indicate uncontrolled symptoms, dependence, misuse or unsafe caregiver administration.
A relative controlling medication or preventing private discussion raises coercion and safeguarding concerns.

05InvestigationsWhat to request, why it matters and how to interpret it.

Investigation order

Read from the initial assessment onwards. Tests may run in parallel in urgent care; first-line, preferred, confirmatory, definitive and gold-standard labels appear only when the chapter explicitly states them.

01
First-line episode safety assessmentFirst stepFirst line
Why
Check airway, respiratory rate and effort, saturation, pulse, pressure, temperature, consciousness, chest and relevant embolic or cardiac features.
Interpretation and limitations
Changed physiology or red flags drives acute investigation; normal saturation supports but does not prove a panic mechanism.
02
Panic-cycle formulation
Why
Map trigger, interpretation, bodily response, safety behaviour, caregiver response, duration and recovery for a representative episode.
Interpretation and limitations
The map identifies targets for breathing, cognitive, activity and carer intervention and features that should trigger medical reassessment.
03
Medication and substance review
Why
Reconcile bronchodilators, corticosteroids, opioids, benzodiazepines, gabapentinoids, caffeine, alcohol and withdrawal states.
Interpretation and limitations
Stimulation, toxicity or withdrawal can mimic panic and materially changes pharmacological safety.
04
Mood and suicide assessment
Why
Assess persistent anxiety, depression, hopelessness, self-harm thoughts, intent, means, protective factors and immediate safety.
Interpretation and limitations
Active intent or inability to remain safe requires urgent mental-health action rather than routine anxiolytic escalation.
05
Targeted cardiopulmonary tests
Why
Use ECG, blood tests, gas, radiograph or embolic imaging when episode features suggest arrhythmia, infection, hypercapnia, anaemia or embolism.
Interpretation and limitations
Tests are selected by changed clinical pattern and goal-concordant treatment possibility, not performed automatically for every familiar episode.
06
Observed recovery-strategy trial
Why
Practice posture, fan, longer exhalation and grounding with the patient and caregiver and record time to recovery and confidence.
Interpretation and limitations
Improvement supports the plan but does not permanently exclude physiological disease when future episodes differ.

06Differential diagnosisRealistic alternatives and the features that help distinguish them.

Acute respiratory emergency

Embolism, pneumothorax, infection, obstruction, oedema and bronchospasm may present with fear and tachypnoea and require focused physiological assessment.

Hypercapnic respiratory failure

Drowsiness, headache, warm peripheries, asterixis, flap and shallow breathing distinguishes dangerous carbon-dioxide retention from uncomplicated panic.

Delirium or medication toxicity

Inattention, fluctuation, hallucination and altered arousal suggests organic brain dysfunction from illness, opioid, steroid or sedative rather than isolated anxiety.

Cardiac arrhythmia

Abrupt palpitations, syncope, irregular pulse and haemodynamic change may drive fear and breathlessness through a primary rhythm disturbance.

Generalised anxiety or depression

Persistent worry, low mood, anhedonia and hopelessness between respiratory episodes suggests a broader treatable psychological disorder.

07ManagementImmediate care, first-line treatment, alternatives and escalation.

01Typical panic crisisReduce threat and restore efficient breathingFirst stepA familiar breathlessness-panic episode occurs without new emergency features.

1Stay with the patient, use one calm speaker, supported posture and facial airflow and guide a gentle prolonged exhalation without demanding deep breaths.
2Name and validate the fear, use grounding and administer only a pre-agreed patient-specific rescue when the non-drug sequence is insufficient.
3After recovery, record trigger, duration and rescue effect and practise the plan again with caregiver adjustments rather than treating the event as failure.

02Changed episodeReopen the physiological differentialSymptoms are more severe, prolonged or different or include chest pain, syncope, hypoxaemia, fever, haemoptysis or altered arousal.

1Perform ABCDE assessment and give emergency oxygen, bronchodilator or airway support as indicated while activating the agreed acute-care route.
2Investigate embolism, pneumothorax, infection, arrhythmia, hypercapnia, medicine toxicity or another suspected cause proportionately.
3EscalationContinue calm coaching and symptom relief, then update the crisis and escalation plan based on the new diagnosis and the patient's values.

03PreventionBreak avoidance and build confidenceAnticipatory fear and activity avoidance persist between episodes.

1Explain the cycle collaboratively and identify one safe valued activity, feared prediction and measurable starting point.
2Combine pulmonary rehabilitation or physiotherapy, pacing, CBT-informed graded practice and caregiver coaching, treating persistent breathlessness in parallel.
3Review confidence, activity and crisis frequency and introduce an SSRI or specialist psychological care when a sustained anxiety disorder warrants it.

04Medicine safetySeparate breathlessness and anxiety targetsOpioid, benzodiazepine or antidepressant is being considered or already used during recurrent respiratory distress.

1State the target symptom and baseline function, check renal and hepatic clearance, hypercapnia, falls, sedatives, alcohol, misuse and driving risk.
2Start one intervention at the lowest appropriate dose with written interval, maximum and delayed-benefit information and no unplanned dose stacking.
3Review arousal, breathing, falls, panic frequency, function, sodium or interactions as relevant and taper dependence-forming treatment rather than stopping abruptly.

Key medicines and prescribing safety3 treatments · regimens, roles and cautions

Reduces severe anxiety that is amplifying breathlessness when non-drug recovery skills and treatment of physiological causes are insufficient.

Lorazepam rescue for severe panic

Use 500 micrograms orally or sublingually as a patient-specific as-needed dose under the local palliative protocol, with a written minimum interval and maximum action plan; lower exposure may be needed in frailty or hepatic impairment.

Not a treatment for hypoxaemia or obstruction; opioids, alcohol, gabapentinoids, hypercapnia and liver dysfunction increase sedation, falls, delirium, dependence and respiratory depression.

Treats persistent panic disorder, anxiety or comorbid depression over weeks and may reduce anticipatory fear and avoidance.

Sertraline for persistent panic or anxiety

Start 25 mg orally once daily when sensitivity or frailty warrants, increasing to 50 mg once daily after about one week if tolerated, with later BNF-guided titration and review.

Explain delayed benefit and possible early activation; monitor gastrointestinal effects, bleeding, hyponatraemia, serotonin interactions, mood and withdrawal and reduce dose in hepatic impairment.

Reduces persistent air hunger and may indirectly lessen panic by reducing the physiological trigger.

Immediate-release morphine for refractory breathlessness

When breathlessness rather than anxiety is the target, an opioid-naive frail adult may start 2 to 2.5 mg orally under the local palliative regimen, with response-led titration and specialist selection in renal or hepatic impairment.

Do not use as an anxiolytic substitute; monitor sedation, breathing, cognition, constipation and concurrent depressants and reformulate if panic persists despite easier breathing.

08ComplicationsImportant consequences, why they occur and why they matter clinically.

Functional avoidance

Fear restricts washing, walking, sleep and leaving the house, accelerating weakness and dependence beyond physiological disease severity.

Emergency-service overuse

Unplanned calls and admissions increase when no rehearsed recovery plan or trusted rapid support exists, sometimes conflicting with preferred place.

Sedative harm

Repeated benzodiazepines cause falls, delirium, tolerance, dependence and respiratory depression, particularly when combined with opioid or hypercapnia.

Caregiver burnout

Night-time vigilance and perceived responsibility for preventing suffocation can cause exhaustion, resentment and breakdown of home care.

Missed disease deterioration

A familiar panic label can delay treatment of embolism, infection, pneumothorax or ventilatory failure when the episode pattern changes.

09Monitoring and follow-upTreatment response, safety checks and longer-term review.

Record episode frequency, duration, trigger, recovery time and whether the patient used the non-drug sequence before rescue.
Track confidence and valued activity as well as anxiety intensity to detect avoidance and rehabilitation gain.
During benzodiazepine or opioid use monitor arousability, respiratory rate and effort, falls, delirium, alcohol and extra doses.
During SSRI initiation review early agitation, suicidal thinking, gastrointestinal effects, sodium risk, bleeding and delayed response.
Reassess cardiopulmonary signs whenever an episode differs from the established pattern or recovery fails.
Ask caregivers about fear, sleep, administration confidence and whether their response reinforces or reduces the panic cycle.
Review the escalation plan after emergency attendance, new oxygen or ventilation need, altered capacity or a patient request.

10Special situationsVariants, exceptions and circumstances that change the usual approach.

Validation is not misdiagnosis

Acknowledging terrifying breathlessness does not mean calling it psychological or abandoning physiological assessment.

Exhalation often helps

Gentle prolonged expiration can reduce breath stacking and dynamic hyperinflation more effectively than commands for repeated deep inhalation.

Caregiver calm is trainable

A rehearsed script and clear red flags reduce mutual escalation while preserving appropriate emergency action.

Rescue can reinforce fear

If every mild sensation immediately triggers sedative use, the patient may never learn that the episode can pass with skills.

Opioid and anxiolytic differ

One targets refractory air hunger and the other anxiety; the same episode may need either, both or neither after assessment.

Planning reduces panic

Knowing who will come, what treatment is acceptable and that comfort will continue makes uncertainty less threatening.

11Common pitfallsFrequent interpretation and management errors.

01
Calling a first or changed episode panic before cardiopulmonary assessment.
02
Telling the patient nothing is wrong because saturation is normal.
03
Giving repeated instructions to take deep breaths and worsening hyperinflation.
04
Using benzodiazepines as first-line treatment for breathlessness itself.
05
Combining opioid, benzodiazepine and alcohol without respiratory review.
06
Prescribing an SSRI without explaining delayed benefit and early activation.
07
Allowing relatives to give extra rescue without an interval and maximum plan.
08
Measuring only attack frequency and overlooking activity avoidance.
09
Failing to assess depression, suicide risk, dependence and safeguarding.
10
Using DNACPR as a complete respiratory escalation plan.