Car Accidents and Pre-Existing Conditions in Austin

If you had a pre-existing medical condition before your Austin car accident, the insurance company will almost certainly try to use it against you. Adjusters routinely argue that your pain was already there, your condition was not caused by the crash, and you are not entitled to compensation for injuries that existed before the accident. These arguments are misleading and often wrong. Texas law protects people with pre-existing conditions through the “eggshell plaintiff” doctrine, which holds that a negligent driver takes their victim as they find them. At McFarlane Law, we fight back against insurance company tactics that unfairly penalize injured people for their medical history.

Call (512) 222-4900 if an insurance company is using your pre-existing condition to deny or reduce your car accident claim.

The Eggshell Plaintiff Doctrine in Texas

Texas follows the well-established “eggshell plaintiff” (or “thin skull”) rule, which means a negligent defendant is responsible for all injuries they cause — even if the victim was more vulnerable to injury than an average person due to a pre-existing condition. If a car accident aggravates your pre-existing back problem, the at-fault driver is liable for the aggravation. If you have osteoporosis and suffer fractures that a younger, healthier person might not have, the at-fault driver is liable for those fractures. The defendant cannot argue “they would not have been hurt this badly if they were healthy” — the law requires them to compensate you for the injuries as they actually occurred.

This doctrine recognizes a fundamental fairness principle: people with existing health conditions deserve the same protection under the law as everyone else. You should not be penalized for having a medical history.

Common Pre-Existing Conditions in Car Accident Cases

The pre-existing conditions that most frequently arise in Austin car accident cases include degenerative disc disease and other spinal conditions, previous back or neck injuries, prior surgeries on the spine, shoulders, or knees, arthritis, osteoporosis and bone density issues, prior traumatic brain injury or concussion history, fibromyalgia and chronic pain conditions, prior whiplash injuries, diabetes (which can slow healing), and mental health conditions including anxiety and depression. Having any of these conditions does not disqualify you from recovering compensation — but it does mean your case requires careful handling to distinguish pre-existing symptoms from new or aggravated injuries caused by the accident.

How Insurance Companies Use Pre-Existing Conditions Against You

Insurance companies have a standard playbook for cases involving pre-existing conditions. They will obtain your full medical history going back years — sometimes decades — looking for any mention of the body part you are claiming was injured. They will highlight prior complaints, treatments, and imaging results to argue your current condition is “just your pre-existing problem.” They may hire a medical examiner (often called an “independent medical examiner” or IME, though they are far from independent) to review your records and opine that the accident did not cause your injuries. They will argue your need for treatment is related to your age, weight, or prior medical history rather than the crash.

These tactics can be effective against unrepresented victims who do not know their legal rights. Our attorneys know exactly how to counter each of these strategies with medical evidence and expert testimony.

Proving Aggravation of a Pre-Existing Condition

The key to a successful pre-existing condition case is clearly demonstrating the difference between your condition before the accident and after. Our legal team works with your treating physicians to document your pre-accident baseline — how you were functioning before the crash, what symptoms (if any) you had, and what treatment you were receiving. We then document the change caused by the accident — new symptoms, increased pain, additional treatment, new limitations, and the loss of function you have experienced since the crash.

Medical imaging is often particularly powerful in these cases. If pre-accident MRIs show stable degenerative changes and post-accident MRIs reveal a new disc herniation at a different level, the causal connection to the crash is clear. If you were managing a chronic condition with minimal treatment and the accident triggered a significant worsening requiring surgery, the aggravation is well-documented. Our personal injury attorneys work closely with medical experts to present this evidence persuasively.

Asymptomatic Pre-Existing Conditions

Many people have degenerative changes in their spine, joints, or other body structures that cause no symptoms — they are completely unaware of these conditions until an accident triggers them. Insurance companies love to argue that these asymptomatic conditions are the “cause” of the victim’s pain, but Texas law is clear: if you were symptom-free before the accident and symptomatic after, the accident is the legal cause of your injuries. The fact that imaging shows underlying degeneration does not change this analysis. An asymptomatic condition that becomes symptomatic due to trauma is an accident-caused injury, and you are entitled to full compensation.

Honest Disclosure Is Essential

When you have a pre-existing condition, honesty with your attorney and your doctors is critical. Do not hide your medical history — the insurance company will find it, and any attempt to conceal prior treatment will destroy your credibility. Instead, be upfront about your complete medical history. Our attorneys use your honesty as a strength by clearly framing the before-and-after picture for the jury or insurance adjuster. Jurors respect plaintiffs who are honest about their medical history and resent insurance companies that try to exploit pre-existing conditions to avoid paying legitimate claims.

Compensation for Aggravation of Pre-Existing Conditions

You are entitled to compensation for the full extent of the aggravation caused by the accident. This includes additional medical treatment necessitated by the aggravation, new surgical procedures that were not previously needed, increased pain and suffering beyond your pre-accident baseline, additional lost wages from the worsened condition, loss of activities and enjoyment of life that you could previously participate in despite your condition, and any permanent worsening of your condition. The at-fault driver is responsible for all of these damages under Texas law. Call McFarlane Law at (512) 222-4900 or fill out the form on this page for a free consultation about your pre-existing condition case.