Causes of brain injury in medical negligence claims
Hypoxic brain injury (lack of oxygen)
The brain is uniquely vulnerable to oxygen deprivation. Even a few minutes without adequate oxygenation causes irreversible neuronal death. In a medical negligence context this most commonly arises from birth asphyxia; anaesthetic failure during surgery; cardiac arrest without prompt resuscitation; respiratory arrest in hospital; or post-operative oxygen desaturation not monitored or treated.
Stroke misdiagnosis
Delayed diagnosis and treatment of ischaemic stroke allows infarction to expand, causing additional brain tissue death and neurological deficit beyond what earlier thrombolysis or thrombectomy would have caused.
Meningitis and encephalitis misdiagnosis
Bacterial meningitis and encephalitis can cause permanent brain damage through direct infection of brain tissue, or through raised intracranial pressure. Delayed diagnosis and antibiotic treatment worsens the extent of permanent injury.
Brain tumour misdiagnosis
A brain tumour that grows untreated because a clinician failed to investigate neurological symptoms — persistent headache, visual disturbance, personality change, focal neurological deficit — can cause permanent brain damage from the tumour itself or from raised intracranial pressure.
Surgical brain injury
Neurosurgical procedures carry an inherent risk of neurological injury. Where the surgical technique fell below the required standard, or a post-operative complication was not recognised and treated in time, a claim may arise.
Subarachnoid haemorrhage misdiagnosed
A subarachnoid haemorrhage presents with a characteristic "thunderclap headache." Failure to investigate with CT head and lumbar puncture, and the re-bleeding that follows delayed diagnosis, is a common basis for a serious negligence claim.
Compensation for brain injury from negligence
Judicial College Guidelines (18th edition) brackets for general damages:
- Moderately severe brain damage: £219,070 – £282,010
- Severe brain damage: £282,010 – £403,990
- Very severe brain damage: upper end £282,010 – £403,990
- Cases involving persistent vegetative state: up to £403,990
Special damages — lifetime professional care, aids and equipment, adapted accommodation, case management, lost earnings — can bring total settlement values for severe brain injury cases to £5 million or beyond.
What do you need to prove?
The standard four elements. Causation in brain injury claims often requires complex neurological expert evidence on the difference that prompt diagnosis or treatment would have made — given what is known about the progression of stroke, hypoxia, infection, or tumour growth.
Frequently asked questions
Can I claim for brain damage caused during surgery?
Yes — if the brain injury resulted from a failure below the required surgical or anaesthetic standard. A claim requires expert evidence that the injury was caused by the clinician's failure, not by the inherent risk of the procedure.
Can I claim if a subarachnoid haemorrhage was missed?
Yes. Failure to investigate a thunderclap headache with CT and lumbar puncture — and the consequences of delayed diagnosis including re-bleeding — is a recognised basis for a clinical negligence claim.
Can a family member bring a claim on behalf of someone with brain damage who lacks capacity?
Yes. A litigation friend — usually a family member — can conduct a claim on behalf of an adult who lacks litigation capacity due to brain injury.
Related guides
- Birth injury compensation
- Stroke misdiagnosis claims
- Meningitis misdiagnosis claims
- Brain damage at birth claims
Sources & further reading
Primary statute, case law and regulator guidance referenced in this article.
- Judicial College Guidelines, 18th edition (2026) — Judiciary
- Headway — the brain injury association — Headway