When to go to A&E – the quick guide you need

If you’re feeling scared because something sudden has happened, the first question is whether you should drive, call 999, or just wait. The answer often comes down to how serious the symptoms are. Below we break down the most common situations that mean you need to head straight to the accident‑and‑emergency department.

Signs you should head straight to A&E

Chest pain that feels heavy, tight, or spreads to your arm, jaw or back is a classic red flag. Don’t try to tough it out – call 999 or go to A&E immediately.

Severe shortness of breath, especially if it comes on fast or you can’t speak full sentences, also needs urgent care. It could be a heart attack, asthma attack, or a serious infection.

Uncontrolled bleeding – whether it’s a deep cut, a head wound that won’t stop bleeding, or a sudden nose bleed that won’t calm – belongs in A&E. Apply pressure, but get to the department right away.

Sudden loss of vision, a severe headache that’s unlike any you’ve had before, or confusion and dizziness can signal a stroke or brain bleed. Time matters, so head to A&E without delay.

Major injuries from falls, car crashes, or anything that leaves you unable to move a limb, suspect a broken bone, or causes intense pain need the emergency team’s assessment.

Poisoning, serious allergic reactions with swelling of the face or throat, or a reaction to medication also requires A&E. Use an epinephrine auto‑injector if you have one, then go.

What happens when you arrive

When you walk in, a triage nurse will ask quick questions and check your vital signs. This process decides how quickly you’ll be seen. It’s normal to wait a short while, but if your condition worsens, tell the staff right away.

The doctors will run tests – blood work, X‑rays, ECGs – based on what they think is causing your problem. Most A&E departments have a short‑stay unit for people who need monitoring for a few hours before they’re safe to go home.

If you’re not sure whether you need A&E, call NHS 111 first. The service can guide you to the right level of care, but remember that any of the red‑flag symptoms above should bypass the phone line and go straight to the department.

Finally, keep your ID, any medication list, and a brief medical history handy. It speeds up treatment and helps the team make the right decisions fast.

Bottom line: heavy chest pain, terrible shortness of breath, uncontrolled bleeding, sudden neurological changes, major trauma or serious allergic reactions are clear reasons to go to A&E now. When in doubt, trust your gut – it’s better to be safe and get checked than to wait and risk a worse outcome.