What Happens When an Accident Aggravates a Pre-Existing Injury?
When an accident makes an existing injury worse, personal injury law calls it “aggravation.” You can recover compensation for the additional harm the accident caused, even if you had a prior condition. Insurance companies often fight these claims, but the eggshell plaintiff rule protects your right to recover for how the accident affected you, not how it would have affected a perfectly healthy person.
If you already had a bad back, an old knee surgery, or chronic pain before an accident, you might assume your claim is weaker than someone with a clean medical history. Insurance adjusters count on that assumption. They will point to your records and argue the pain was there before the crash, so they should not have to pay for it.
That is not how the law works. If an accident worsens a condition you already had, you have the right to seek compensation for that aggravation. Knowing the difference between a pre-existing injury and an aggravated one can make or break a personal injury claim, so it is worth understanding before you talk to an adjuster.
This guide covers what counts as a pre-existing injury, how aggravation is proven, and the legal protections that keep your claim from being unfairly discounted.
What Counts as a Pre-Existing Condition?
A pre-existing injury is any medical condition, injury, or impairment that existed before the accident in question. It could be an injury from a previous car accident or a chronic condition like arthritis or degenerative disc disease.
Having one does not disqualify you from filing a claim. It just means your claim focuses on the difference between your condition before the accident and your condition after it.
Common Examples in Personal Injury Cases
Pre-existing injuries come up often in car accident and slip-and-fall cases. Common examples include prior back or neck injuries such as herniated discs, previous knee or shoulder surgeries, osteoarthritis and other degenerative conditions, old fractures that healed but left lasting weakness, and chronic pain conditions like fibromyalgia.
How Medical Records Document Baseline Health
Your medical history before the accident establishes your “baseline” condition. That baseline gives your attorney, the insurance company, and potentially a jury a clear picture of your health before the incident.
Imaging results, treatment notes, and physician assessments from before the accident become the foundation for proving aggravation. Without that baseline, it is much harder to show how the accident changed things.
The Difference Between Causation and Aggravation
Causation means the accident created a new injury that did not exist before. Aggravation means the accident made a condition you already had worse.
For example, if you had a mild disc bulge in your lower back and a rear-end collision turns it into a full herniation with nerve pain, that is aggravation. If the same crash fractures a wrist that was perfectly healthy, that is causation.
Both entitle you to compensation, but they are evaluated differently. Aggravation claims need clear evidence of how your condition changed after the accident.
The Medical Evidence That Proves Aggravation
Medical documentation is the core of any aggravation claim. The evidence that helps prove a personal injury claim in Virginia generally includes:
- Records from before the accident establishing your baseline
- Records immediately after the accident documenting new symptoms or increased severity
- Ongoing treatment records showing how the condition has progressed
- Physician testimony connecting the accident to the worsened condition
Diagnostic imaging taken before and after the accident, such as MRIs or X-rays, is especially persuasive because it offers a side-by-side comparison of your condition over time.
Why Insurance Companies Dispute Aggravation Claims
Insurers have a financial incentive to minimize payouts, and aggravation claims are an easy target. Adjusters argue your current symptoms come entirely from the pre-existing condition, especially if there is a gap in treatment or any ambiguity in your records. Common tactics include requesting independent medical examinations designed to downplay your injuries, dragging out the claims process to pressure you into a quick settlement, and picking apart gaps in your treatment history.
This is where experienced representation matters. Attorneys who regularly handle these claims know what medical evidence to gather and how to counter these tactics.
How Courts Handle Liability for Aggravation
Courts generally hold at-fault parties responsible for the full extent of the harm they cause, including aggravation of a pre-existing condition. If a defendant’s negligence worsens your condition, they can be held liable for that additional harm even though they did not cause the underlying problem.
The Eggshell Plaintiff Rule
The most important principle in aggravation cases is the eggshell plaintiff rule. It says a defendant must “take the plaintiff as they find them.” They are responsible for the full extent of the injuries they cause, even if those injuries are more severe than a typical, healthy person would have suffered.
In practice, this means the at-fault party cannot argue for a smaller payout just because someone without your condition would have walked away with less damage. The rule exists specifically to protect people with pre-existing vulnerabilities.
What You Can Recover
If you can show the accident aggravated your injury, you may be entitled to compensation for:
- Additional medical treatment required because of the aggravation
- Increased pain and suffering
- Lost wages if the aggravation keeps you from working
- Reduced quality of life from the worsened condition
The key is a clear connection between the accident and the specific way your condition changed. Several factors affect what a personal injury claim is worth, and aggravation is one of the hardest to value without strong documentation.
Protecting Your Right to Fair Compensation
In most personal injury cases, you carry the burden of proving the accident aggravated your condition. That takes medical records, expert testimony, and sometimes vocational experts who can explain how the aggravation affects your ability to work. It is a hard burden to meet alone.
A pre-existing injury does not weaken your claim, but it does demand careful documentation and a clear strategy to overcome insurance company pushback. From establishing your baseline to leveraging the eggshell plaintiff rule, every step matters.
For decades, Strickland, Diviney & Segura has represented injured Virginians against insurance companies that would rather not pay. If you are dealing with an aggravated injury after an accident, schedule a consultation or call (540) 982-7787 to discuss your case and understand your options.
Frequently Asked Questions
Can I still file a claim if I had a pre-existing injury before the accident?
Yes. You can file a claim for aggravation of a pre-existing injury. You are entitled to compensation for the portion of harm the accident caused, even if you had an underlying condition beforehand.
How do I prove my injury was aggravated by the accident?
Proving aggravation typically requires medical records from before and after the accident, diagnostic imaging comparisons, and physician testimony connecting the accident to your worsened condition.
What is the eggshell plaintiff rule?
The eggshell plaintiff rule holds that a defendant is liable for the full extent of harm they cause, even if the plaintiff’s pre-existing condition made them more vulnerable to injury than an average person would be.
Will the insurance company automatically deny my aggravation claim?
Not automatically, but insurers frequently dispute these claims by arguing your symptoms stem entirely from your pre-existing condition. Strong medical documentation and legal representation help counter those tactics.
Do I need a lawyer to pursue an aggravation claim in Virginia?
You can technically file without one, but aggravation claims involve complex medical and legal evidence. An experienced personal injury attorney can gather the right documentation and push back against tactics designed to minimize your compensation.
