TL;DR: A traumatic brain injury (TBI) may not be obvious at first, and “normal” imaging does not necessarily rule out concussion symptoms. Strong Illinois TBI claims typically combine early medical documentation with practical proof of how the injury changed work, school, and daily life. If you want help evaluating next steps, contact us.
Traumatic Brain Injuries (TBI) Can Be “Invisible” But Life-Changing
Many TBIs, especially mild TBIs and concussions, can involve symptoms that are subtle, delayed, or fluctuating. People may initially feel fine, then develop headaches, dizziness, sleep disruption, sensitivity to light or noise, memory problems, slowed thinking, irritability, anxiety, or depression. The CDC notes that symptoms may appear right away or days or weeks after the injury.
From a legal perspective, TBIs often require careful documentation because functional limitations may not be captured by a single test. Many concussions do not show abnormalities on routine CT or MRI, and diagnosis may rely on symptoms and clinical evaluation.
Tip: Treat Early Symptoms Like Evidence (and a Health Priority)
If you suspect a concussion, do not wait for symptoms to “settle.” Getting evaluated promptly can protect your health and creates a time-stamped medical record tying symptoms to the incident. Tell the provider about all symptoms, including mood, sleep, and cognitive changes, and ask what warning signs require urgent care.
Common Causes of TBI Cases in Chicago
TBIs can occur in many incident types, including:
- Motor vehicle crashes (rear-end, head-on, rideshare, commercial truck collisions)
- Pedestrian and bicycle collisions
- Falls (slip-and-falls, stairway falls, trip hazards)
- Construction and workplace incidents
- Assaults and negligent security situations
- Sports and recreational incidents
Different causes can involve different defendants and insurance policies, such as drivers, property owners, employers, contractors, or security providers, so early investigation can matter.
What You Generally Need to Prove in an Illinois TBI Claim
Although every case is fact-specific, many TBI claims focus on proving:
- Liability: A person or entity owed a duty of care and failed to act reasonably.
- Causation: The incident caused the brain injury or aggravated a pre-existing condition.
- Damages: The injury resulted in losses supported by evidence (for example, medical costs, wage loss, reduced earning capacity, and non-economic harms such as pain and suffering).
Checklist: What to Gather After a Suspected TBI
- Medical records: ER or urgent care notes, discharge instructions, follow-up referrals, and therapy plans.
- Symptom timeline: A daily log of headaches, sleep disruption, cognitive issues, and functional limitations.
- Incident proof: Crash or incident reports, photos, witness names, and any video.
- Work and school impacts: Attendance records, performance changes, and emails documenting issues.
- Out-of-pocket costs: Prescriptions, transportation, and co-pays.
Insurance Tactics in TBI Cases (and How to Respond)
Insurers may attempt to minimize brain injury claims by arguing:
- Symptoms are stress-related, pre-existing, or unrelated
- The impact was too minor to cause a TBI
- Treatment was excessive or not medically necessary
- Gaps in care suggest symptoms were not serious
Deadlines: Illinois Statutes of Limitations
Time limits can apply, and they may differ based on who you are suing. Many Illinois personal injury claims are subject to a two-year limitations period (735 ILCS 5/13-202). However, many claims against local public entities or their employees are subject to a one-year limitations period (745 ILCS 10/8-101).
Frequently Asked Questions
Can I have a TBI if my CT or MRI is normal?
Often, yes. Many concussions and mild TBIs do not show clear abnormalities on routine imaging; clinicians may rely on symptoms and examination in addition to testing.
What if I had migraines, anxiety, or a prior concussion before the incident?
A prior condition does not automatically bar a claim. The key question is whether the incident caused a new injury or aggravated prior symptoms, supported by medical evidence and documented changes in function.
Illinois-specific disclaimer: This article is for general informational purposes only and is not legal advice. Reading it does not create an attorney-client relationship. Deadlines and immunities can differ by defendant and facts. You should consult a qualified Illinois attorney about your specific situation as soon as possible.
