Las Vegas Personal Injury and Pre-Existing Conditions: What You Need to Know
If you were injured in an accident in Las Vegas but had a pre-existing medical condition before the crash, you may be worried that the insurance company will use your medical history to deny or minimize your claim. This is one of the most common tactics insurers use — and it is also one of the most successfully countered arguments in Nevada personal injury law. Understanding how Nevada’s eggshell plaintiff doctrine protects you is essential before you accept any settlement offer.
What Is the Nevada Eggshell Plaintiff Doctrine?
Nevada follows the “eggshell plaintiff” (or “thin skull”) rule, a well-established legal principle that holds defendants responsible for the full extent of injuries they cause — even when the victim was more vulnerable than an average person because of a pre-existing condition. The name comes from the idea that if you have a skull as fragile as an eggshell, a defendant who strikes you cannot escape liability simply because a healthier person would have suffered less serious harm.
In practice, this means that if you had a prior back injury and a car accident aggravated that condition into something far more serious, the at-fault driver is still responsible for the full damage caused — including the aggravation. Nevada courts have consistently upheld this doctrine, and it applies across all personal injury cases: car accidents, slip and falls, trucking crashes, and more.
How Insurance Companies Use Pre-Existing Conditions Against You
Despite the legal protections the eggshell doctrine provides, insurance adjusters routinely try to exploit your medical history. Here are the most common strategies they use.
Arguing Your Injuries Are “Pre-Existing”
Adjusters will pull your medical records going back years, looking for any prior treatment related to the same body part injured in the accident. Their goal is to argue that your current pain, medical costs, and limitations existed before the crash — and that they therefore owe you nothing, or substantially less.
The Critical Difference: Aggravation vs. New Injury
Nevada law distinguishes between a new injury and an aggravation of a pre-existing condition. A new injury is one that would not have occurred but for the accident. An aggravation occurs when the accident makes an existing problem significantly worse. In both cases, you are entitled to compensation. The insurer goal is to convince you that only a “new” injury counts — that is simply incorrect under Nevada law.
Demanding Overly Broad Medical Records Releases
Insurance companies will often ask you to sign a broad, unrestricted medical records release. This allows them to search through your entire history for any condition they can use against you. You are not required to sign an unlimited release, and doing so without guidance from a Las Vegas personal injury attorney can seriously harm your claim.
Medical Records and Expert Testimony: Why They Are Critical
In cases involving pre-existing conditions, expert testimony is often the difference between a fair recovery and a denied claim. Your attorney will work with medical professionals — treating doctors, orthopedic surgeons, neurologists, and vocational rehabilitation experts — who can clearly articulate how the accident changed your health trajectory and quantify the full impact on your life and earning capacity.
Key evidence used to support an aggravation claim includes pre-accident medical records establishing a baseline condition, emergency room and follow-up records from after the crash, imaging studies comparing pre- and post-accident findings, and written physician opinions on causation. It is equally important to be fully transparent with your attorney about your prior medical history. Attempts to conceal pre-existing conditions almost always backfire during discovery, damaging credibility with insurers and courts alike.
What You Can Recover in a Nevada Pre-Existing Condition Case
If you had a pre-existing condition that was aggravated by an accident, you may be entitled to recover medical expenses related to treating the worsened condition, lost wages if the aggravated condition kept you from working, pain and suffering caused by the aggravation, and future medical costs and care if the worsened condition requires ongoing treatment. Nevada’s comparative negligence rules allow you to recover even if you bear some fault for the accident, provided your share of fault does not exceed 50 percent.
Whether you suffered a car accident, a slip and fall, or any other type of injury, the presence of a pre-existing condition should never stop you from pursuing a claim. If you were involved in a Las Vegas car accident and are concerned about how your medical history will affect your case, talking to an experienced attorney is the critical first step.
Call Marathon Law Group for a Free Consultation
Marathon Law Group has 45 years of combined experience helping Las Vegas accident victims fight back against insurance company tactics designed to undervalue claims. We know how to build compelling cases even when the insurance company is pointing to your medical history. We handle personal injury cases on a contingency fee basis — no fee unless we win.
Do not let a pre-existing condition stop you from pursuing the compensation you deserve. Contact Marathon Law Group today at (702) 522-1808 for a free case evaluation.
Marathon Law Group | 2012 Hamilton Ln, Las Vegas, NV 89106 | (702) 522-1808 | marathonlawgroup.com