Pre-Existing Condition Disputes in Colorado Injury Claims
If you have ever had a prior injury, a chronic condition, or even an old sports injury that flared up years later, there is a good chance an insurance adjuster will find it in your medical records after a crash. Once they do, a familiar argument shows up: your injuries are not really from this accident, they are just your old condition acting up again. It is one of the most common tactics used to reduce what an injured person recovers, and it is often built on a misunderstanding of how the law actually treats pre-existing conditions.
The Law Does Not Require You to Have Been Perfectly Healthy Before the Crash
Tort law across the country, including in Colorado, follows what is often called the eggshell plaintiff rule, sometimes referred to as the thin skull rule. As the Cornell Law School Legal Information Institute explains, this principle holds that a defendant must take their victim as they find them. If a crash aggravates a pre-existing condition or causes more serious harm to someone with an existing vulnerability than it would to a completely healthy person, the at-fault party is still responsible for the full extent of that harm, not some hypothetical lesser injury a healthier person might have suffered.
In practice, this means the driver who caused your crash cannot avoid responsibility just because you had a prior back issue, a previous concussion, or a chronic condition that made you more susceptible to serious injury. What matters is whether the crash caused new harm or made an existing condition meaningfully worse than it was before.
Aggravation of a Pre-Existing Condition Is Its Own Category of Damages
Colorado’s civil jury instructions on damages, published by the Colorado Judicial Branch, specifically address the aggravation of pre-existing conditions, recognizing that a crash can worsen a condition that was previously stable, controlled, or asymptomatic. If your back pain had not required treatment in years and suddenly needs ongoing care after a crash, that change is compensable even though the underlying condition existed before the collision. The relevant question is not whether the condition existed before the crash, but whether the crash changed your day to day reality.
Why Insurers Lean So Heavily on This Argument
Pre-existing condition arguments are attractive to insurers because medical records almost always contain something an adjuster can point to, a prior complaint of neck stiffness, an old sports injury, even a single mention of back pain from years earlier that had nothing to do with the current claim. Raising the issue does not require the insurer to prove much of anything up front. It simply shifts the burden onto you to show that the crash caused new or worsened harm, which is exactly why documentation becomes so important.
What Actually Strengthens Your Position
- A clear medical record of your condition and functional status before the crash, including how long it had been since you last needed treatment for the same issue
- Prompt medical evaluation after the crash that documents new or worsened symptoms in your own words, close in time to the collision
- A treating physician who can speak specifically to whether the crash caused new injury or aggravated an existing one, rather than leaving that connection unaddressed in your chart
- Consistent follow-through with recommended treatment, since large gaps in care give an insurer more room to argue your current condition is unrelated to the crash
The goal is not to hide a pre-existing condition. Insurers will find it in your records regardless. The goal is to make sure the record clearly shows the difference between how you were functioning before the crash and how you are functioning after it.
This Applies to Mental and Physical Conditions Alike
Pre-existing condition disputes are not limited to physical injuries. A crash can also aggravate anxiety, a prior traumatic experience, or other psychological conditions, and the same basic principle applies. The at-fault driver remains responsible for the harm their negligence actually caused, even when it interacts with something that existed before the crash.
When to Talk to a Lawyer
Once an insurer raises a pre-existing condition, the claim usually stops being a simple negotiation and starts requiring real medical documentation to support your position.
- Colorado Car Accident Lawyer – if an insurer is trying to blame your injuries on an old condition, this is where to build the medical record that shows what actually changed after the crash.
- Colorado Spinal Cord Injury Lawyer – if the disputed injury involves your back, neck, or spine specifically, this covers the more technical medical and legal issues those injuries raise.
What to Do If Your Records Include a Prior Injury
- Be upfront and consistent about your medical history with every provider you see after the crash
- Ask your treating doctor to document any change from your prior baseline, not just your current symptoms
- Avoid long gaps between appointments, which insurers often use to argue your condition is unrelated to the crash
- Keep your own notes on how your daily function changed after the crash compared to before it
If an insurance company is using an old injury to challenge your Colorado accident claim, Travis Legal Offices can help you build the record that shows the real difference the crash made.
