How Preexisting Conditions Affect Your Personal Injury Claim in Minnesota

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A prior injury or chronic health condition should not disqualify you from recovering fair compensation after an accident. Yet many injured Minnesotans hesitate to pursue a personal injury claim the moment a doctor mentions their medical history. 

The good news is that having a preexisting condition does not automatically prevent you from filing a claim in Minnesota. However, insurance companies may try to use your medical history to reduce what they pay. Knowing how these cases work can help you protect your rights and pursue the compensation you deserve. 

The Eggshell Plaintiff Rule: Minnesota Takes You As You Are

Minnesota courts apply a principle known as the “eggshell plaintiff” rule. The doctrine holds that a negligent party must take an injured person exactly as they find them. Fragile health, chronic conditions, and all. A defendant cannot escape liability simply because the injured person was more susceptible to harm than an average, healthy individual would have been. 

The rule gets its name from the idea that if you negligently knock over someone with bones as brittle as an eggshell, you are responsible for the full resulting harm. Even if the same fall would have been harmless to most people. 

In practical terms, this means that if a car crash, slip and fall, or workplace accident worsened a prior back injury, aggravated arthritis, or triggered a latent condition that had never caused symptoms before, the at-fault party is liable for the aggravated harm. 

Note: Minnesota law does not require you to prove that the defendant foresaw the full extent of your injuries. What matters is that negligence caused additional harm. Whatever form that harm takes, given your specific health history.

Common examples of preexisting conditions: 

• Degenerative disc disease
• Osteoporosis
• Prior fractures
• Hearing or memory loss 
• Mental health conditions like PTSD

All of which can be significantly worsened by a new accident and all of which remain compensable under Minnesota law. 

What Insurance Companies Do with Your Medical History

Knowing the eggshell rule protects you is one thing. Navigating the claims process is another. When you file a personal injury claim in Minnesota, you will generally be required to disclose your medical records as part of the discovery process, including records that predate the accident. 

Insurers use that history to build a counter-narrative: that your current pain, limitations, and medical expenses are simply a continuation of what you already had, not a consequence of their policyholder’s negligence. 

Tactics insurance companies commonly use include:

• Arguing that there is no clear evidence the accident caused any aggravation
• Contending that your condition would have deteriorated on its own timeline anyway
• Suggesting that you are conflating your prior injury with a new one 

Their goal is to reduce the portion of damages they must pay for and, in some cases, to deny compensation altogether. 

Why Medical Records Matter So Much

Medical records play a big role in these types of cases. They help show what your health looked like before the accident and what changed after it. 

Records from before the accident set a baseline. They show your condition, any ongoing issues, and how well you were functioning at the time. After the accident, new records help show what injuries were added or how your old condition got worse. 

Doctors, scans, and medical test results can all help explain the difference. In some cases, medical experts may also give their opinion on how the accident affected your condition. 

When you compare your health before and after the accident, it becomes much easier to show what part of your condition is actually linked to the incident. That comparison is often what makes or breaks a claim involving a preexisting condition. 

Steps that strengthen your claim

If you’ve been in an accident, small decisions in the days and weeks after can make a real difference in your case. Here’s what you should do after an accident:

• Seek medical attention immediately after the accident, even if symptoms seem minor at first
• Be honest with your attorney about your full medical history. Surprises hurt your credibility
• Preserve records from before the accident to establish your baseline health status
• Avoid gaps in treatment, which insurers use to argue your symptoms are not serious
• Do not speak directly with opposing insurer without your attorney present

Aggravation Versus Exacerbation: Why The Distinction Matters for Your Damages

Minnesota law draws an important line between two types of harm involving preexisting conditions. An exacerbation is a temporary flare-up. The condition worsens after the accident but eventually returns to roughly where it was before. 

An aggravation is permanent. The accident left you in a worse state than you would have been in absent the negligent act, with no full return to your prior baseline. 

Both situations can be compensated, but the difference can affect how much your claim is worth. The important thing to remember is that compensation is based on the additional harm caused by the accident, not the preexisting condition itself. 

For example, you may have been managing back pain and working full-time before a car accident. If the accident made your condition worse and left you unable to work, that change could be strong evidence that your condition was aggravated. 

Evidence that can help support your claim includes: 

• Medical records showing your condition before and after the accident
• Employment records showing changes in your ability to work 
• Notes or journals documenting your symptoms and daily activities
• Statements from family members, friends, or coworkers who have seen how your condition has changed
• Opinions and treatment records from your doctor

If the accident permanently worsened your condition, you may be able to recover compensation for: 

• Past and future medical expenses
• Lost wages
• Reduced earning capacity
• Rehabilitation and ongoing care costs 
• Pain and suffering
• Emotional distress
• Loss of enjoyment of life

When to Involve a Personal Injury Attorney

Cases involving preexisting conditions are often more difficult than regular injury claims. Insurance claims tend to push back harder because they know these cases can be easier to dispute. 

When you should talk to a lawyer

It’s usually best to speak with a lawyer early, especially before dealing with the insurance company or accepting any offer. Early guidance can help you avoid mistakes that are hard to fix later. 

How a lawyer helps with your case

A Minneapolis personal injury lawyer can help explain your medical history in a clear way that shows what changed after the accident. This often includes reviewing medical records, working with doctors, and, when needed, bringing in medical experts. 

An experienced car accident lawyer can also push back against low settlement offers and make sure the full impact of your injuries is considered, including: 

• Future treatment 
• Lost income
• Effect on your daily life

Why acting early matters

Insurance companies often make quick settlement offers, especially in cases involving past injuries. These early offers are usually lower than what the case is actually worth. Once you accept, you can’t go back and ask for more. 

A lawyer can review any offer and help you understand if it fairly reflects your situation or if it leaves out important future costs. 

Time limits you should know

In Minnesota, most personal injury claims must be filed within six years of the accident. Even though that sounds like a long time, waiting too long can make it harder to gather strong evidence and medical records. 

Getting help early gives you a better chance of building a clear and well-documented case.  

The Bottom Line

A preexisting condition is not a barrier to recovery under Minnesota law. It is simply a factor that requires careful handling. The eggshell plaintiff rule ensures that defendants cannot use your medical history as a shield against accountability. 

What matters is the delta: the provable difference between where your health stood before the accident and where it stands today because of someone else’s negligence.