Parkinson’s Disease Misdiagnosis Medical Malpractice in Chicago

Parkinson’s disease misdiagnosis is a serious medical problem that causes real harm to real people. When a doctor gets the diagnosis wrong, a patient may spend months or even years taking the wrong medications, undergoing unnecessary procedures, or watching their true condition worsen without proper treatment. If you or a loved one in Chicago received a wrong Parkinson’s diagnosis, or if a doctor failed to recognize that you actually had Parkinson’s, you may have a valid medical malpractice claim. At Briskman Briskman & Greenberg, a Chicago personal injury lawyer at our firm can review your situation and help you understand your legal options.

Table of Contents

• Why Parkinson’s Disease Is Frequently Misdiagnosed
• Common Errors That Lead to a Wrong Parkinson’s Diagnosis
• How Illinois Law Defines a Parkinson’s Misdiagnosis Malpractice Claim
• The Statute of Limitations for Filing Your Claim in Illinois
• What Compensation May Be Available in a Parkinson’s Misdiagnosis Case
• How Briskman Briskman & Greenberg Handles Parkinson’s Misdiagnosis Cases
• FAQs About Parkinson’s Disease Misdiagnosis Medical Malpractice in Chicago

Why Parkinson’s Disease Is Frequently Misdiagnosed

Parkinson’s disease has no single definitive test. It is a “clinical” diagnosis, meaning a doctor relies on a patient’s history, symptoms, and physical exam to reach a conclusion. That process leaves significant room for error.

Key diagnostic criteria include bradykinesia, which is slowness of movement, plus at least one of the following: resting tremor, stiffness or rigidity, or balance issues. Those same symptoms appear in a long list of other conditions, which is exactly why mistakes happen.

Essential tremor, progressive supranuclear palsy, drug-induced parkinsonism, and Lewy body dementia are often mistaken for Parkinson’s disease. A doctor who does not look carefully enough at the full clinical picture can easily point to the wrong diagnosis.

Parkinson’s disease is also associated with nonmotor symptoms, including autonomic dysfunction, depression, and hallucinations, which can make the initial diagnosis difficult. When a patient shows up with depression or sleep problems, a doctor may treat those symptoms in isolation rather than connecting them to a progressive neurological disorder.

The misdiagnosis rate ranges from 10% to 20% or greater depending on clinician experience. That number reflects a serious and ongoing problem in both primary care and specialist settings across the country, including right here in Chicago.

Patients who visit busy hospital systems near the Loop, in Lincoln Park, or in neighborhoods like Wicker Park often rely on primary care physicians who may not have deep movement disorder experience. When those doctors fail to refer patients to a neurologist or movement disorder specialist promptly, the window for accurate early diagnosis closes.

Common Errors That Lead to a Wrong Parkinson’s Diagnosis

A misdiagnosis of Parkinson’s disease typically falls into one of two categories. Either a doctor tells a patient they have Parkinson’s when they do not, or a doctor fails to recognize that a patient’s symptoms are actually caused by Parkinson’s. Both errors can cause serious harm.

Awareness of the high rate of diagnostic errors between Parkinson’s disease and essential tremor in community practice is critical, as misdiagnosis can delay appropriate treatment and worsen patient outcomes. Essential tremor is one of the most common conditions confused with Parkinson’s, and the two require very different treatment approaches.

Rheumatological disease can also resemble Parkinson’s disease, and it is possible for someone with a primary underlying polyarthropathy to be mistaken as having Parkinson’s. Joint stiffness can mimic the rigidity and can make it difficult during clinical examination to distinguish it from the bradykinesia of Parkinson’s.

Several other conditions might produce symptoms that can be mistaken for Parkinson’s disease. Certain drugs can produce or exacerbate parkinsonian symptoms. Because of this, a doctor should carefully review all medications to determine if any could contribute to Parkinson’s-like symptoms. Failing to perform that review is a basic clinical error.

Doctors also make mistakes by relying too heavily on a patient’s age. Because Parkinson’s disease is commonly linked to people over 40 years of age, proper diagnosis can be an issue for those with early-onset Parkinson’s. Younger patients with legitimate symptoms are sometimes dismissed or told their concerns are anxiety-related.

When a doctor skips a referral to a movement disorder specialist, orders the wrong tests, or fails to follow up on abnormal findings, those decisions can form the basis of a malpractice claim. A qualified medical malpractice lawyer can review whether those failures fell below the accepted standard of care.

How Illinois Law Defines a Parkinson’s Misdiagnosis Malpractice Claim

To bring a medical malpractice claim in Illinois, you must show that a healthcare provider failed to meet the standard of care that a reasonably competent provider in the same field would have met, and that this failure directly caused your injury. A Parkinson’s misdiagnosis claim fits within that framework when a doctor’s diagnostic error leads to measurable harm.

Illinois has a specific procedural requirement that applies before you can even file your lawsuit. Under 735 ILCS 5/2-622, known as the Healing Art Malpractice statute, the plaintiff’s attorney must attach an affidavit to the complaint stating that a qualified health professional has reviewed the case. That professional must have determined, in a written report, that there is a reasonable and meritorious cause for filing the action. The reviewing professional must have practiced or taught in the same area of medicine within the last six years.

This requirement exists to screen out claims that lack medical support. It also means that building a Parkinson’s misdiagnosis case requires real medical evidence from the start, not just a patient’s belief that something went wrong. An experienced medical malpractice attorney will coordinate with qualified neurologists and movement disorder specialists to prepare that affidavit and written report.

Illinois law also governs how liability is divided when more than one provider is at fault. Under 735 ILCS 5/2-1117, all defendants found liable are jointly and severally liable for a plaintiff’s past and future medical and medically related expenses. Any defendant whose share of fault is 25% or greater is also jointly and severally liable for all other damages. This matters in Parkinson’s cases where multiple providers, such as a primary care physician, a neurologist, and a hospital, may each bear some responsibility for the diagnostic failure.

The Statute of Limitations for Filing Your Claim in Illinois

Time limits are strict in Illinois medical malpractice cases, and missing the deadline means losing your right to recover damages entirely. Under 735 ILCS 5/13-212, you generally have two years from the date you knew, or through reasonable diligence should have known, about the injury caused by the misdiagnosis. There is also an absolute outer limit of four years from the date of the act or omission that caused the harm, regardless of when you discovered it.

Parkinson’s misdiagnosis cases often involve a discovery problem. A patient may have been told for years that they had essential tremor or depression, only to later learn from a different doctor that the real diagnosis was Parkinson’s disease all along. The two-year clock typically begins running when you first became aware, or should have become aware, of the connection between the misdiagnosis and your injury.

There are limited exceptions. If the injured person was a minor at the time, the statute allows up to eight years from the act or omission, but the claim cannot be brought after the person’s 22nd birthday. Certain legal disabilities may also pause the limitations period under the statute.

Do not wait to find out which deadline applies to your situation. Contacting a medical malpractice lawyer as soon as you suspect a misdiagnosis gives your legal team the time needed to gather medical records, consult with experts, and build a complete case before the window closes.

What Compensation May Be Available in a Parkinson’s Misdiagnosis Case

When a Parkinson’s misdiagnosis causes real harm, Illinois law allows injured patients to seek compensation for the losses they have suffered. Those losses can be significant, because Parkinson’s disease is a progressive condition. Every month of delayed or incorrect treatment can mean a measurable decline in function and quality of life.

Recoverable damages in a successful malpractice claim can include past and future medical expenses, costs of medications and therapies that were either unnecessary or delayed, lost wages and reduced earning capacity, and compensation for pain and suffering. If a misdiagnosis contributed to a patient’s death, surviving family members may have a claim under the Illinois Wrongful Death Act, 740 ILCS 180, which allows recovery for damages caused by a wrongful act or neglect that results in death.

Attorney fees in Illinois medical malpractice cases are regulated by statute. Under 735 ILCS 5/2-1114, the total contingent fee for a plaintiff’s attorney in a medical malpractice action cannot exceed 33 1/3% of all sums recovered. Briskman Briskman & Greenberg handles medical malpractice cases on a contingency fee basis, which means you pay no attorney fees unless we recover compensation for you. However, clients may still be responsible for certain case-related costs and expenses, which we will explain clearly before you make any decisions.

Each case is different, and past results in other cases do not guarantee a particular outcome in yours. What we can tell you is that our team takes these cases seriously. If you are in the Chicago area, whether near the Richard J. Daley Center where civil cases are filed, or anywhere across Cook County, we are ready to review your situation. Call us at (312) 222-0010 for a free consultation.

How Briskman Briskman & Greenberg Handles Parkinson’s Misdiagnosis Cases

Parkinson’s misdiagnosis cases require a careful, methodical approach. The medical records tell the story, but reading them correctly takes both legal skill and medical knowledge. At Briskman Briskman & Greenberg, we work with qualified medical professionals to evaluate whether a provider’s conduct fell below the accepted standard of care.

We begin by reviewing all relevant records, including primary care notes, neurology consultations, imaging studies, and medication histories. We look for the moments where the diagnostic process broke down, whether a referral was never made, a test was never ordered, or warning signs were ignored. This kind of case often involves failures at multiple levels, connecting to the same patterns seen in broader neurological disorder misdiagnosis situations.

Our team handles cases throughout the Chicago area, including in Cook County and surrounding communities. Whether your care took place at a hospital near Michigan Avenue, in a clinic on the North Side, or at a suburban facility off I-290 or I-94, we can investigate what happened and who is responsible.

If you believe a wrong Parkinson’s diagnosis harmed you or someone in your family, reach out to a medical malpractice attorney at our firm today. We serve clients across the Chicago area and beyond. You can also connect with a medical malpractice lawyer through our Gurnee office if you are located in the northern suburbs. Contact Briskman Briskman & Greenberg at (312) 222-0010, or visit us at 205 W Randolph St., Suite 925, Chicago, IL 60606. There is no fee for the initial consultation, and we do not collect attorney fees unless we recover compensation for you.

FAQs About Parkinson’s Disease Misdiagnosis Medical Malpractice in Chicago

What is the difference between a Parkinson’s misdiagnosis and a delayed Parkinson’s diagnosis?

A misdiagnosis means a doctor told you that you had Parkinson’s disease when you actually had a different condition, or told you that you had a different condition when you actually had Parkinson’s. A delayed diagnosis means the correct diagnosis was eventually reached, but not within a reasonable time. Both situations can form the basis of a medical malpractice claim in Illinois if a doctor’s failure to meet the standard of care caused you harm. The key question in either scenario is whether a reasonably competent physician would have reached the correct diagnosis sooner, and whether the delay or error made your condition worse.

Can I sue a doctor for misdiagnosing Parkinson’s disease in Illinois?

Yes, you can pursue a medical malpractice claim against a doctor who misdiagnosed Parkinson’s disease, provided you can show that the doctor failed to meet the accepted standard of care and that this failure caused you measurable harm. Illinois also requires that you file an affidavit under 735 ILCS 5/2-622 confirming that a qualified health professional has reviewed your case and found a reasonable and meritorious basis for the claim. An attorney can help you satisfy that requirement and evaluate whether your situation supports a viable claim.

How long do I have to file a Parkinson’s misdiagnosis lawsuit in Illinois?

Under 735 ILCS 5/13-212, you generally have two years from the date you knew or should have known about the injury caused by the misdiagnosis. An absolute outer limit of four years from the date of the underlying act or omission also applies, regardless of when you discovered the error. Because Parkinson’s misdiagnosis cases often involve long delays before a patient realizes what went wrong, the exact start date of the two-year window can be complicated. Contact an attorney as soon as possible to protect your right to file.

What types of damages can I recover in a Parkinson’s misdiagnosis case?

Recoverable damages can include past and future medical expenses, costs of unnecessary treatments or procedures you underwent because of the wrong diagnosis, medications that caused harm, lost wages, reduced earning capacity, and compensation for pain and suffering. If the misdiagnosis contributed to a patient’s death, surviving family members may have a claim under the Illinois Wrongful Death Act, 740 ILCS 180. Every case is different, and the specific damages available depend on the facts of your situation. Past outcomes in other cases do not guarantee similar results in yours.

What if multiple doctors were involved in my misdiagnosis?

Multiple providers can share responsibility for a Parkinson’s misdiagnosis. For example, a primary care physician may have failed to refer you to a neurologist, while a neurologist may have performed an inadequate evaluation. Under 735 ILCS 5/2-1117, all defendants found liable are jointly and severally responsible for your past and future medical and medically related expenses. Any defendant whose share of fault reaches 25% or more is also jointly and severally liable for all other damages. An attorney can investigate the full chain of care and identify every party whose negligence contributed to your harm.

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