Having a pre-existing medical condition does not automatically prevent you from recovering compensation after an accident in Michigan.
Many people have previous injuries, arthritis, degenerative changes, prior surgeries, chronic pain, or other medical conditions before an accident occurs. The important question in a personal injury case is often not whether a condition existed before the accident, but whether the accident caused a new injury or made an existing condition worse.
Michigan personal injury cases involving pre-existing conditions can become complicated because insurance companies may argue that a person’s symptoms existed before the accident. Medical records, diagnostic testing, treatment history, and evidence showing how the person’s condition changed after the incident can therefore become especially important.
If someone else’s negligence caused or aggravated an injury, a Michigan personal injury claim may still allow the injured person to pursue compensation.
Can You File a Personal Injury Claim If You Had a Pre-Existing Condition?
Potentially, yes.
A person does not have to be in perfect health before an accident to have a valid personal injury claim.
Suppose someone already experienced occasional lower-back pain but was still working, exercising, caring for family members, and completing normal daily activities. After an accident, that person develops significantly worse pain, requires injections or surgery, and can no longer perform the same activities.
The existence of earlier back problems does not necessarily mean the accident caused no compensable harm.
The key issue may instead become how much the accident changed or aggravated the person’s condition.
What Is an Aggravation of a Pre-Existing Condition?
An aggravation occurs when an accident makes an existing injury or medical condition worse.
Examples may include:
- A previously manageable back condition becoming severely painful after a crash
- An old knee injury becoming symptomatic again after a fall
- Degenerative disc disease becoming substantially more limiting after trauma
- A prior neck condition requiring additional treatment after an accident
- An existing neurological condition developing new or more severe symptoms
This distinction matters because an insurance company may point to an old diagnosis and argue that the accident did not cause the person’s current problems.
But the existence of a prior condition and the worsening of that condition because of a new accident are two different issues.
How Does Michigan Law Treat Pre-Existing Conditions?
Michigan law generally recognizes that a negligent person does not necessarily escape responsibility simply because the person they injured was more susceptible to harm.
This concept is sometimes referred to as the “eggshell plaintiff” rule.
In practical terms, an injured person is generally evaluated as they actually existed when the incident occurred—not as a hypothetical person with perfect health.
However, this does not mean another party automatically becomes responsible for every symptom or medical problem a person has ever experienced.
A personal injury claim must still establish the connection between the negligent event and the new injury, aggravation, or worsening of the existing condition.
That is why medical evidence and a clear before-and-after history can become particularly important.
Why Are Medical Records So Important?
Medical records can be some of the most important evidence in a personal injury case involving a pre-existing condition.
Insurance companies may compare records from before and after the accident to determine whether symptoms, diagnoses, treatment, or physical limitations changed.
Pre-accident records might show:
- How frequently the person sought treatment
- The severity of earlier symptoms
- Whether the condition was stable
- Previous diagnostic imaging
- Earlier physical limitations
- Prior surgeries, injections, or therapy
Post-accident records can then help demonstrate what changed.
For example, someone may have had degenerative changes visible on an MRI years before an accident but experienced few functional limitations. If the person begins experiencing significant symptoms and requires extensive treatment after the accident, that before-and-after comparison can become important evidence.
What If an MRI Shows Degenerative Changes?
This is a common issue in injury claims, particularly those involving the neck or back.
Imaging may reveal conditions such as:
- Degenerative disc disease
- Disc bulges
- Arthritis
- Spinal stenosis
- Previous disc injuries
An insurer may argue that these findings prove the person’s symptoms are unrelated to the accident.
But imaging is only part of the picture.
The analysis may also involve the person’s symptoms before the accident, their level of functioning, when new symptoms appeared, whether those symptoms are consistent with the trauma, and what treating medical professionals conclude.
More serious spinal injuries may also require specialized evaluation. Our Michigan spinal cord injury lawyers handle cases involving catastrophic spinal injuries and long-term neurological consequences.
What If You Had Surgery Before the Accident?
A prior surgery does not automatically eliminate a later personal injury claim.
Someone who previously underwent back, neck, shoulder, knee, or other surgery may have recovered well before another accident occurred.
The relevant questions may include:
- What was the person’s condition after the earlier surgery?
- Had they returned to work or normal activities?
- Were they still receiving treatment?
- Did the new accident create different symptoms?
- Did treatment increase significantly afterward?
- Is additional surgery now being recommended?
Again, establishing an accurate before-and-after picture can be critical.
Can an Insurance Company Access Your Old Medical Records?
When a personal injury claim involves a pre-existing condition, insurers and defense attorneys may seek medical records relevant to the claimed injuries.
Those records can sometimes help the injured person’s case rather than hurt it.
For example, records showing that someone had not needed treatment for a condition for several years before an accident may support an argument that the new event caused a meaningful change.
Problems can arise when someone attempts to conceal a prior injury or provides inconsistent information about their medical history.
Should You Tell Your Attorney About Previous Injuries?
Yes.
Being candid with your attorney about previous injuries, treatment, accidents, surgeries, and medical conditions is important.
A prior condition is often something an attorney can evaluate and address. An undisclosed condition discovered later by the insurance company can create unnecessary credibility problems.
Your attorney should know about the prior condition before the insurance company attempts to use it against you.
What If You Injured the Same Body Part Before?
This situation is common.
For example, someone might have:
- A previous lower-back injury followed by a new back injury
- An old shoulder tear aggravated by a fall
- Prior knee problems worsened by another accident
- Earlier neck pain followed by new symptoms after a collision
The fact that the same body part was previously injured does not automatically determine the outcome.
Instead, the evidence may need to establish what changed after the new incident.
Medical providers may compare earlier and newer examinations, imaging, symptoms, treatment recommendations, and functional limitations.
What If You Had No Symptoms Before the Accident?
A person can have an underlying medical condition without experiencing significant symptoms.
Degenerative conditions are a common example.
Someone might have age-related changes visible on imaging but live normally without substantial pain or treatment. Trauma may then cause the previously asymptomatic condition to become symptomatic.
This distinction can matter when an insurer argues that an imaging finding existed before the accident.
The question is not simply whether the underlying condition existed. It may also be whether the accident triggered symptoms or materially worsened the person’s condition.
How Do Insurance Companies Use Pre-Existing Conditions?
Insurance companies may scrutinize pre-existing conditions when evaluating an injury claim.
Common arguments can include:
- “The pain was already there.”
- “The MRI shows degeneration rather than trauma.”
- “The claimant had previously injured the same body part.”
- “The accident did not cause the need for treatment.”
- “The symptoms are no worse than they were before.”
These arguments make consistent medical documentation particularly important.
Insurers may also examine gaps in treatment, prior claims, earlier accidents, and statements made to healthcare providers.
Can a Gap in Medical Treatment Hurt the Claim?
It can make the claim more difficult, depending on the circumstances.
An insurer may argue that a long gap between the accident and medical treatment means the accident did not cause the reported symptoms.
Similarly, significant gaps during treatment may be used to argue that the condition improved.
There can be legitimate reasons for treatment gaps, including difficulty obtaining appointments, insurance problems, work responsibilities, transportation issues, or a medical provider advising the patient to wait.
The circumstances matter.
How Do You Prove an Accident Made a Pre-Existing Condition Worse?
Evidence may include:
- Medical records from before and after the accident
- Diagnostic imaging
- Physician opinions
- Physical therapy records
- Surgical recommendations
- Prescription history
- Employment records
- Testimony from family members or coworkers
- Photographs or videos
- Evidence of activities the person could perform before the accident
- Documentation of new physical restrictions
A strong claim often tells a clear story of the person’s life before the accident compared with life afterward.
That distinction can also be important when evaluating pain and suffering after a Michigan car accident, where the effect of an injury on a person’s normal life may be highly relevant.
Can You Recover Compensation for a Pre-Existing Condition?
The purpose of a personal injury claim is not generally to compensate someone for a medical condition that existed independently before an accident.
However, when another person’s negligence aggravates an existing condition or causes additional injury, damages related to that worsening may potentially be recoverable.
Depending on the type of case and applicable Michigan law, damages may involve:
- Medical expenses
- Lost income
- Reduced earning capacity
- Pain and suffering
- Disability
- Loss of normal life
- Other accident-related losses
The damages available depend heavily on the facts and legal framework governing the particular claim.
Does a Pre-Existing Condition Affect the Value of a Personal Injury Case?
It can.
A pre-existing condition can make causation more disputed because the insurer may argue that some or all of the person’s symptoms existed beforehand.
But it does not automatically make a case worth less.
In some situations, an accident can have an especially serious impact on someone who was already medically vulnerable.
Case value depends on many factors, including the severity of the aggravation, medical evidence, prognosis, treatment, functional limitations, lost income, available insurance coverage, disputed liability, and other circumstances.
Pre-Existing Conditions After Michigan Car Accidents
Pre-existing conditions frequently become an issue after motor vehicle crashes.
Michigan car accident claims can involve additional questions concerning No-Fault benefits, third-party liability claims, and Michigan’s requirements for recovering certain noneconomic damages.
Our comprehensive Michigan car accident lawyer guide explains those issues in greater detail.
Frequently Asked Questions About Pre-Existing Conditions and Michigan Injury Claims
Can an insurance company deny my claim because I had the injury before?
The existence of a previous injury does not automatically determine whether a new claim is valid. The central issue may be whether the accident caused a new injury or materially aggravated the previous condition.
What if I had arthritis before my accident?
Arthritis and other degenerative conditions are common. Evidence showing your symptoms, treatment and functioning before and after the accident may help determine whether the accident worsened the condition.
What if I previously injured the exact same body part?
You may still have a claim. Medical records and other evidence can help distinguish your previous condition from the changes that occurred after the new accident.
Should I hide an old injury from the insurance company?
No. Inaccurate or incomplete information can create credibility problems. Tell your attorney about previous injuries and treatment so they can evaluate the issue appropriately.
What if I was pain-free before the accident even though my MRI shows degeneration?
That distinction can be important. An imaging abnormality can exist before someone experiences substantial symptoms. Medical evidence may help determine whether trauma caused the condition to become symptomatic or worsened it.
Do I need an attorney if I have a pre-existing condition?
Not every injury claim requires an attorney, but pre-existing conditions can create additional disputes over medical causation and damages. An attorney can review the medical history, accident evidence, insurance coverage, and applicable Michigan law to evaluate the claim.
Talk With a Michigan Personal Injury Lawyer
A previous injury or medical condition should not automatically cause you to assume you have no case.
The attorneys at Khamo Law Accident & Injury Lawyers evaluate how an accident changed a client’s health, ability to work, daily activities, and future medical needs. Our attorneys bring more than 40 years of combined legal experience to personal injury cases throughout Michigan.
If you were injured because of another person’s negligence and are concerned that a previous medical condition could affect your claim, contact Khamo Law for a consultation.
Call 248-466-0606 or learn more about how our Michigan personal injury lawyers can help.