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Minor head injury
Who needs a CT and who can go home with advice.
| If you find… | …then |
|---|---|
| GCS < 15 at 2 hours, or < 13 at any time | CT within 1 h |
| Suspected open/depressed or basal skull fracture (panda eyes, Battle’s sign, CSF leak, haemotympanum) | CT within 1 h |
| Post-traumatic seizure, focal neurology, more than 1 episode of vomiting | CT within 1 h |
| On anticoagulants (not aspirin alone) | CT within 8 h |
| Loss of consciousness or amnesia AND (age ≥ 65, bleeding disorder, dangerous mechanism, or > 30 min retrograde amnesia) | CT within 8 h |
| Concern about non-accidental injury or no one at home | Don’t discharge — safeguarding / observation |
NICE NG232 CT head criteria (adults)
- Within 1 h: GCS < 13 initially, or < 15 at 2 h
- Within 1 h: suspected open/depressed/basal skull fracture
- Within 1 h: post-traumatic seizure, focal deficit, > 1 vomit
- Within 8 h: anticoagulant use
- Within 8 h: LOC/amnesia + age ≥ 65, bleeding disorder, dangerous mechanism, or > 30 min retrograde amnesia
None present → no CT. Discharge only with a responsible adult and written advice. Children have separate NG232 criteria.
| Investigation | Only if… |
|---|---|
| CT head | Only if NG232 criteria met |
| No routine bloods | Clotting only if on anticoagulants / bleeding disorder |
Management & advice
- Discharge with a responsible adult for the first 24 h
- Written head-injury advice (QR below)
- Rest, avoid alcohol and sleeping tablets for 24–48 h
- Return to work, study and sport gradually; no contact sport until symptom-free (graded return)
- No driving until fully recovered
Refer / follow-up
- Persisting post-concussion symptoms > 2 weeks → GP
| Drug | Dose | Duration / notes |
|---|---|---|
| Paracetamol | 1 g every 4–6 hours, max 4 g in 24 h (reduce if under 50 kg or liver risk) | As needed |
You don’t need a scan using the national guidance. You should have someone with you for the next 24 hours. Headache, tiredness and feeling a bit off are common for a few days. Call 999 or come straight back if you become very drowsy, vomit again and again, the headache gets much worse, you have a fit, or you develop weakness or problems speaking or seeing.
Come back / call 111 — or 999 if severe — if:
- Becoming drowsy or hard to wake
- Repeated vomiting
- Worsening or severe headache
- Confusion, weakness, problems with speech, vision or balance
- Fit or seizure; clear fluid from ears or nose
Official NHS pages. Ask the patient to scan the code with their phone camera, or tap “Show to patient” to make it full screen.
Minor head injury — clinic note
A structure to document efficiently. It is not a completeness check — use your trust’s system and your clinical judgement.
Doses are typical adult doses drawn from the guidance above. Always check the current BNF/BNFc and your local antimicrobial policy.