The 4 Pillars of Clinical Negligence: Duty, Breach, Causation, and Damage Explained
- Medico Legal Hub
- Nov 20, 2024
- 3 min read
When we talk about clinical negligence, the legal concepts might feel complex at first. However, breaking them down into the four key pillars makes it easier to understand whether you or someone you know may have a claim. These pillars—Duty of Care, Breach of Duty, Causation, and Damage—form the foundation of any clinical negligence case.
Let’s explore these pillars in simple terms, using a mix of paragraphs and lists, to make things clear and approachable.
1. Duty of Care

Every healthcare professional, whether a GP, nurse, or surgeon, has a duty of care to their patients. This means they are legally obligated to act in a way that ensures your safety and provides a reasonable standard of care. For example:
A doctor must diagnose and treat illnesses competently.
A hospital must maintain a clean and safe environment for patients.
A pharmacist must ensure prescriptions are dispensed correctly.
If this duty exists—and it almost always does for NHS patients—it sets the stage for assessing whether that duty was breached.
2. Breach of Duty
A breach of duty happens when a healthcare provider fails to meet the expected standard of care. This could result from an error, oversight, or failure to act appropriately in a given situation. Common examples include:
Misdiagnosing a serious illness, such as cancer, when symptoms were clear.
Performing surgery incorrectly, such as damaging surrounding organs.
Prescribing the wrong medication or dosage, leading to complications.
To prove a breach, you need to ask: Would a similarly qualified professional have acted differently in the same circumstances? If the answer is yes, this pillar is likely fulfilled.

3. Causation
Proving causation is about connecting the dots. It must be shown that the breach of duty directly caused harm. This can sometimes be the most challenging part of a clinical negligence claim because not all mistakes result in injury. For instance:
If a delayed cancer diagnosis led to the need for more invasive treatments, causation could be established.
If a surgical error caused ongoing pain or disability, it likely satisfies causation.
Tip for Patients:Think about how your health would have been different if the breach hadn’t occurred. Would your recovery have been faster? Would you have avoided complications altogether?
4. Damage (Harm)
Finally, you must demonstrate damage. This refers to the physical, emotional, or financial harm caused by the breach of duty. Without proof of harm, there is no basis for compensation. Damage can take many forms, such as:
Physical harm: Injury, illness, or long-term disability.
Emotional distress: Anxiety, depression, or trauma following the incident.
Financial loss: Loss of earnings, costs of additional treatment, or travel expenses for medical appointments.
Key Takeaways
Clinical negligence claims require proof of all four pillars: Duty, Breach, Causation, and Damage.
Understanding these pillars can help you determine if you or someone you know may have a claim.
If you’re unsure, consider seeking professional advice to explore your options.
By breaking down these concepts, we hope to empower patients to identify potential cases of clinical negligence and take the next steps confidently.
Need Help Understanding Clinical Negligence?
If you’re unsure whether your treatment met the expected duty of care or if you have concerns about clinical negligence, we’re here to support you. Use the form below to share your experience and any specific concerns you might have. Our team will review your scenario and provide personalised guidance to help you understand your rights and next steps.
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