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Difficulty breathing or feeling like you can't get enough air. Can indicate serious conditions.
There are several possible causes. Here are the most common ones:
Hyperventilation from stress.
You might suspect this if you have:
Airway inflammation.
You might suspect this if you have:
Cold, flu, or chest infection.
You might suspect this if you have:
Low iron affecting oxygen delivery.
You might suspect this if you have:
Requires urgent assessment.
You might suspect this if you have:
Important: This information is for general guidance only and should not be used to self-diagnose. A doctor can properly assess your symptoms and provide appropriate advice.
Call 000 or go to Emergency immediately
Shortness of breath is a symptom I take seriously because the range of causes spans from harmless (anxiety-related hyperventilation) to life-threatening (pulmonary embolism, heart failure). The key clinical question is: is this acute (sudden onset) or chronic (gradual)? Sudden breathlessness in an otherwise well person needs urgent assessment — especially with chest pain, leg swelling, or recent immobilisation. Gradual breathlessness that worsens over weeks often points to asthma, anaemia, deconditioning, or early heart failure. Anxiety is a very common cause but should only be attributed after other causes are excluded. If you are unsure, err on the side of seeking help — breathing difficulty is always taken seriously.
Medical certificate guidance: Any significant breathlessness affecting your ability to walk, climb stairs, or perform normal tasks warrants time off. If breathlessness required emergency assessment, follow-up rest is appropriate. Always discuss return to work with your treating doctor.
All clinical decisions are made by AHPRA-registered doctors following our clinical governance framework. We never automate clinical decisions.
Call 000 if severe, sudden, or with chest pain, blue lips, or inability to speak.
Yes. Panic attacks often cause breathlessness. But new or unexplained breathlessness should be checked.
If your symptoms are keeping you from work or study, you can request a medical certificate through InstantMed. A doctor will review your symptoms and issue a certificate if clinically appropriate — typically for 1 to 3 days depending on severity. You don't need to be dramatically unwell; feeling genuinely too rough to function is reason enough.
Yes. Australian-registered doctors can assess your symptoms and issue valid medical certificates via telehealth. You fill in a detailed health questionnaire, a doctor reviews it, and if appropriate, your certificate is delivered digitally. No waiting room required.
You complete a structured health questionnaire covering your symptoms, duration, severity, and relevant medical history. The reviewing doctor uses this information — the same clinical reasoning they'd apply in a face-to-face consult — to determine whether a certificate, advice, or referral is appropriate.
A medical certificate covers the period stated on the document. If your symptoms worsen or don't improve as expected, you should see a GP in person or visit your nearest emergency department if it's urgent. Your certificate doesn't replace ongoing care — it's a point-in-time clinical assessment.
In some cases, yes. If a doctor reviewing your request determines that a common, non-restricted treatment is appropriate, they may issue a prescription as part of a consultation. Not all symptoms require or qualify for a prescription — the doctor will advise you on next steps.
Medical certificates are typically issued in under 30 minutes, available 24/7. Other requests are reviewed within 1–2 hours during operating hours (8am–10pm AEST, 7 days). You'll receive an email notification once your request has been reviewed.
If your symptoms suggest something that requires a physical examination, diagnostic tests, or specialist referral, the doctor will let you know and recommend appropriate next steps. Your safety is the priority — telehealth is a great option for many things, but it's not a replacement for hands-on assessment when that's what's needed.
No Medicare card is required for medical certificates. If you're requesting a prescription or consultation, a valid Medicare card is needed. Our service is private and does not attract a Medicare rebate, though any prescriptions issued can still attract PBS subsidies at the pharmacy.
Chest pain can indicate a heart attack or other serious conditions. Many cases are not life-threatening. Knowing the warning signs helps you decide when to seek emergency care.
A reflex that helps clear your airways. Can be dry or productive (with mucus), and acute (short-term) or chronic (lasting weeks).
Our Australian-registered doctors can assess your symptoms and provide advice, treatment, or medical certificates if needed.
Get assessedThis information is for general educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before making decisions about your health. Content on this page has been reviewed by AHPRA-registered Australian doctors but does not replace a personalised medical consultation.