Mental health negligence claim: examples, legal tests, and compensation

Published 15 May 2026

TL;DR

A mental health negligence claim arises when a psychiatrist, community mental health team, or inpatient facility falls below the required standard of care and causes the patient harm
Common examples include: failure to detain under the Mental Health Act when detention was clinically indicated, inadequate risk assessment, inappropriate medication, and failure to follow up a high-risk patient in the community
The Bolam test applies to psychiatric practice in the same way as any other specialism: the standard is that of a responsible body of psychiatrists
Where a negligent failure to detain leads to a patient's suicide or serious self-harm, a claim may lie both in clinical negligence and, in inpatient settings, potentially under the Human Rights Act (Article 2)
The time limit is three years from the negligent act or date of knowledge; in fatal cases, dependants may also have a claim

Mental health negligence claims arise in some of the most difficult clinical situations in the law. The assessment and management of psychiatric risk involves clinical judgement under uncertainty, and courts apply the Bolam standard with careful attention to the evidence about what responsible psychiatric practice required in the specific circumstances. Not every adverse outcome in a mental health setting constitutes negligence. But where a psychiatrist or mental health team fails to meet the standard required by their specialism, and that failure causes the patient harm, a legal claim may arise.

What does a mental health negligence claim involve?

A mental health negligence claim is a clinical negligence claim in which the breach of duty occurs in the context of psychiatric care. The claim may be brought against an NHS mental health trust, a community mental health team, an inpatient psychiatric unit, or an individual psychiatrist. The legal framework is the same as for any clinical negligence claim: duty of care, breach of that duty applying the Bolam test, and causation.

The Bolam standard in psychiatric practice takes account of the fact that psychiatric diagnosis and risk assessment involve degrees of clinical uncertainty not present in more straightforward medical fields. A psychiatrist who makes a clinical risk assessment that a responsible body of psychiatrists would have endorsed is not in breach, even if a subsequent adverse event occurs. A psychiatrist who ignores documented risk factors, fails to carry out an assessment that guidelines require, or discharges a high-risk patient without adequate safety planning may be in breach.

For an overview of how negligence claims against doctors are assessed more generally, see the doctors negligence guide.

What are common examples of mental health negligence claims?

Failure to detain under the Mental Health Act 1983: a psychiatrist who assesses a patient at acute risk of serious self-harm and decides not to detain under section 2 or section 3 of the Mental Health Act 1983, in circumstances where a responsible body of psychiatrists would have detained, may be in breach. This is the most common basis for a mental health negligence claim where the patient subsequently harms themselves.

Inadequate risk assessment: risk assessment in psychiatric practice requires systematic evaluation of known risk factors. A community mental health team that fails to carry out a required risk assessment, or carries one out in a cursory way that misses significant documented risk factors, may be in breach.

Failure to follow up a high-risk patient: patients discharged from inpatient care or seen by community mental health services are subject to Care Programme Approach (CPA) planning, which includes follow-up arrangements. Failure to follow up a patient known to be at risk, particularly after missed appointments, is a recognised basis for a negligence claim.

Inappropriate or negligent prescribing: psychiatrists prescribe complex medications including antipsychotics, mood stabilisers, antidepressants, and anxiolytics. Prescribing errors, failure to monitor for side effects, dangerous drug interactions, and failure to adjust treatment in response to a patient's deteriorating condition are all potential bases for a claim.

Failure to identify and treat a medical cause of psychiatric symptoms: some psychiatric presentations (for example, acute delirium) have medical rather than psychiatric causes. A psychiatrist or A&E clinician who treats what is in fact a medical emergency as a psychiatric presentation may be in breach if a responsible clinician would have identified the underlying medical cause.

Does the Human Rights Act apply to mental health negligence?

In inpatient psychiatric settings, mental health negligence claims may have an additional dimension under the Human Rights Act 1998. Article 2 of the European Convention on Human Rights (the right to life) imposes an operational duty on public authorities to take reasonable steps to protect a person's life where there is a real and immediate risk of which the authority is aware.

Where a detained patient dies by suicide in an inpatient setting, the family may have a claim both in clinical negligence and under Article 2. These claims are legally distinct. The clinical negligence claim compensates for the breach of the duty of care. The Article 2 claim is about whether the state authority complied with the procedural and operational obligations imposed by the Convention.

Not every inpatient death by suicide gives rise to an Article 2 claim. The risk must have been real and immediate, and the steps taken by the unit must have fallen below what was reasonably required.

Compensation in a mental health negligence claim

Compensation in a mental health negligence claim is assessed by reference to the harm caused. General damages for psychiatric injury are assessed under the Judicial College Guidelines (17th edition, April 2024).

Psychiatric injury: the JCG bracket for severe psychiatric damage (permanent effects preventing the claimant from functioning at pre-injury levels in all or most aspects of life) runs from £54,830 to £115,730. Moderate psychiatric damage, where the prognosis is better, runs from £5,860 to £19,070.

Where the negligent failure to detain or adequately treat a patient leads to serious physical self-harm, additional general damages are awarded for the physical injuries sustained. Special damages cover care costs, lost earnings, and the cost of private psychiatric treatment.

In fatal cases, the estate has a claim under the Law Reform (Miscellaneous Provisions) Act 1934 and dependants may have a dependency claim under the Fatal Accidents Act 1976. For psychological injury compensation ranges, see the psychological injury guide. For full compensation ranges by injury, see the compensation guide.

Time limits and starting a claim

The time limit is three years from the date of the negligent act or from the date of knowledge. In mental health negligence cases involving a patient who lacked mental capacity at the relevant time, the limitation period does not run during the period of incapacity. In fatal cases, the three-year period runs from the date of death or the date of knowledge of the personal representative.

For time limits, see the time limits guide. For funding, see the funding guide.

This page provides legal information, not legal advice. If you believe a mental health service caused you or a family member harm through a failure to meet the required standard of care, speak to a qualified solicitor who specialises in clinical negligence.