PanicStation.org
UK USA
uk Health & medical scares sudden wheezing • asthma symptoms suddenly worse • asthma flare up • asthma attack • chest tightness • short of breath • can't speak full sentences • blue reliever inhaler • reliever not helping • using a spacer • coughing and wheezing • night time asthma symptoms • peak flow suddenly low • breathing feels tight • unexpected asthma worsening • wheeze after cold or flu • wheeze after smoke or fumes • fast breathing with asthma

What to do if…
you develop sudden wheezing or your asthma symptoms worsen unexpectedly

Short answer

Sit upright and use your reliever inhaler immediately. If you feel worse at any point, or you’re not improving quickly after using your reliever as below, call 999 for an ambulance.

Do not do these things

  • Do not lie down flat or curl up — it can make breathing harder.
  • Do not “wait it out” if you’re getting worse, struggling to speak, or your reliever isn’t helping.
  • Do not take more than the recommended emergency reliever doses below without getting urgent medical help.
  • Do not leave someone alone if they’re having a significant asthma attack.
  • Do not drive yourself to A&E if you’re very breathless or dizzy — call 999.
  • Do not take sedatives or alcohol “to calm down” — they can make it harder to notice worsening breathing.
  • Do not use someone else’s prescription inhaler (unless it’s your child’s/your prescribed one and you’re following their plan).

What to do now

  1. Get into the best position for breathing.
    Sit upright (lean slightly forward if that helps), loosen tight clothing, and try to keep your breaths slow.

  2. Use your reliever inhaler right away (choose the matching option).

    • If you have a “blue” reliever inhaler (usually salbutamol):
      Take 1 puff every 30–60 seconds until you feel better, up to 10 puffs.
      Shake the inhaler between puffs and use a spacer if you have one.
    • If you use an “AIR” or “MART” inhaler (used for both prevention and relief):
      Take 1 puff every 1–3 minutes until you feel better, up to 6 puffs.

  3. Call 999 for an ambulance immediately if any of these are true:

    • You feel worse at any point, even while using the inhaler.
    • You’re not better after 10 puffs (blue reliever) or after 6 puffs (AIR/MART).
    • You’re struggling to speak more than a few words, you’re exhausted/drowsy/confused, or your lips/face look bluish.
    • You don’t have your reliever inhaler, it seems empty, or it’s not working.

  4. If you’ve called 999 and help hasn’t arrived after 10 minutes and you’re not improving:
    Repeat step 2 (same puff timing and maximums). If you’re still not improving after repeating, contact 999 again immediately.

  5. If you improve enough that you don’t need 999, still treat this as urgent today.

    • If you managed the attack yourself at home, ask your GP practice for an urgent same-day appointment (GP/asthma nurse).
      If you cannot get a same-day slot, ask for the earliest urgent review possible (do not leave it “for next week”).
    • If you were treated by paramedics or in hospital, ask for a follow-up within 2 working days after treatment/discharge.
    • If you can’t reach your GP or it’s out of hours, use NHS 111.

  6. Once you’re steady, reduce the chance of a repeat flare in the next few hours.

    • Move away from obvious triggers (smoke, fumes, strong fragrance, cold air, pets/pollen if clearly triggering).
    • Check your reliever inhaler isn’t empty and that you’re using correct technique (use a spacer if you have one).
    • If you use a peak flow meter and you know your personal best, check it and note the number.

  7. Write down a quick “event note” while it’s fresh.
    Time symptoms started, what you think triggered it, what you took (and how many puffs), and whether you called 111/999. This helps clinicians adjust your plan safely.

What can wait

  • You do not need to decide right now whether you “need a new diagnosis” or what your long-term medication should be.
  • You do not need to deep-clean your home, change your entire routine, or identify every possible trigger today.
  • You can wait to sort repeat prescriptions and paperwork until you’re breathing normally — focus on urgent review first.

Important reassurance

Worsening asthma can feel frightening and can escalate quickly, even if you’ve been “fine for ages.” Acting early — sitting up, using your reliever correctly, and getting urgent help when needed — is the safest way to stop this from becoming severe.

Scope note

This is first-steps guidance for the next minutes to 1–2 days. Ongoing control, medication changes, and trigger management should be done with a clinician (GP/asthma nurse) using your asthma action plan.

Important note

This guide is general information, not a medical diagnosis or personalised treatment plan. If you’re worried at any point, symptoms are severe, or you’re not improving quickly with your reliever, call 999.

Additional Resources
Support us