
After an accident, people might assume that proving they were injured is enough to recover compensation. Injuries are certainly an important part of any personal injury claim. However, another legal element often becomes the center of the dispute: causation.
In a personal injury case, causation refers to the relationship between a person’s negligent conduct and the injuries that result. Simply put, causation answers the important question, “Did the defendant’s actions actually cause the victim’s injuries?”
Why Causation Matters in Personal Injury Cases

Causation is often one of the most important (and most heavily disputed) elements in a personal injury case. Without causation, there is usually no valid negligence claim.
To help illustrate this concept, imagine a driver runs a red light and collides with another vehicle. At first glance, liability may seem obvious.
However, the insurance company may argue:
- The victim’s injuries existed before the crash.
- The accident was too minor to cause the claimed injuries.
- Some other event caused the medical condition.
- The victim’s symptoms are unrelated to the collision.
In other words, the insurer may not dispute the accident itself. Instead, they might challenge the connection between the accident and the injury. That connection is called causation. If causation cannot be established, compensation may be denied even when negligence occurred.
Two Types of Causation
Personal injury cases involve two related, but distinct, concepts:
- Cause in fact (sometimes called actual cause)
- Proximate cause
In many cases, actual cause and proximate cause overlap. Both are important when evaluating liability.
What is Actual Cause?
Actual cause focuses on whether the injury would have occurred without the defendant’s conduct. A common way to think about actual cause is by using the “but for” test. But for the defendant’s actions, would the injury have happened?
For example:
A distracted driver looks at a text message instead of the road and rear-ends another vehicle. The injured driver suffers a broken wrist. In this circumstance, the texting driver caused the collision, and the collision caused the broken wrist. The chain of events is straightforward. The negligent conduct directly resulted in the injury.
What Is Proximate Cause?
While actual cause focuses on whether an action contributed to an injury, proximate cause examines whether the injury was a reasonably foreseeable consequence of the conduct.
The law does not hold people responsible for every imaginable consequence of their actions. Instead, liability is generally limited to harms that are reasonably connected to the negligent behavior.
For example:
A speeding driver loses control of a vehicle and crashes into another car. The resulting injuries to the occupants are a foreseeable consequence of speeding, so proximate cause may exist.
How Do You Prove Causation?
Strong evidence is the key to establishing causation. Several types of evidence may help your case:
Medical Records
Medical records frequently provide the foundation for proving causation. These records document diagnoses, symptoms, treatment, and observations. Prompt medical attention often strengthens a claim by creating a clear timeline between the accident and the injury.
Expert Witnesses
Experts may help explain complex topics like accident mechanics, injury causation, future medical needs, and long-term effects. Expert testimony is especially common in serious injury cases.
Accident Reports
Police reports and incident reports may help establish how the accident occurred. If these documents are created immediately after an accident, this evidence may be more accurate than witness testimony since people may forget important details if asked to recall what they saw from memory.
Photographs and Video Evidence
Photographs, surveillance footage, traffic camera recordings, and dashcam videos can help demonstrate the forces involved in an accident. Video evidence can be especially critical for accidents in which there were no third-party witnesses.
How a Personal Injury Lawyer Can Help
Causation disputes often require careful investigation and strong evidence—a personal injury lawyer can help by:
- Gathering critical evidence. Attorneys obtain medical records, accident reports, witness statements, and other evidence needed to establish causation.
- Working with medical experts. An attorney will know what types of experts you need to prove your case for compensation.
- Identifying weaknesses in the defense’s position. Attorneys anticipate common insurer tactics and develop strategies to counter them.
- Building a clear narrative. Successful cases often tell a straightforward story showing exactly how the defendant’s conduct caused the injury.
- Negotiating with insurance companies. Lawyers advocate for fair compensation when insurers attempt to minimize damages.
- Taking the case to trial. If a fair settlement cannot be reached, an attorney can present the evidence before a jury.
An experienced attorney can help you gather the evidence necessary to prove causation. This will enable you to establish liability and pursue the compensation you deserve.
Contact the Texas Personal Injury Lawyers at The de la Garza Law Group for a Free Consultation
Every personal injury case is built on different facts. Causation is often the bridge that connects negligent conduct to financial recovery.
If you have been injured because of someone else’s negligence, you may need legal assistance. Contact De la Garza Law Group today at (713) 784-1010 for a free consultation. Our Texas personal injury lawyers will help you gather the evidence you need to prove your case and answer any questions you have about your next steps.