Concussion in Professional Athletes

A concussion is a mild traumatic brain injury. Force transmitted to the head or body causes rapid acceleration and rotation of the brain, temporarily disrupting the way brain cells communicate.

Most concussions do not appear on a standard CT or MRI. That is a limitation of routine imaging, not evidence that an injury did not occur — diagnosis is clinical, based on symptoms, exam findings and the mechanism of injury.

Symptoms may start immediately or emerge hours later, and can include headache, fogginess, light and noise sensitivity, dizziness, slowed thinking, sleep disruption and mood change.

• Professional football and baseball involve repeated high-speed collisions, falls onto turf or dirt, and impacts from equipment, balls and other players.
• Athletes are trained to keep competing. Historically, many concussions went unreported because players did not want to lose a roster spot, and because sideline recognition protocols are relatively recent.
• Return-to-play pressure and short careers mean an athlete may sustain several concussions in the same season, sometimes before the previous one has fully resolved.

A single documented concussion may be treated as a specific injury tied to a date and play.

A career of repeated impacts — diagnosed concussions plus the many sub-concussive hits that were never reported — is the kind of exposure that cumulative trauma claims are designed to address.

Where symptoms persist and no single event explains them, medical opinion often points to the overall exposure across the career rather than one identifiable hit.

More on how repetitive-exposure claims work: Cumulative trauma explained.

• Headaches that never fully resolved after the playing career ended
• Short-term memory lapses, word-finding difficulty and trouble concentrating
• Light and noise sensitivity, or difficulty in crowded environments
• Sleep problems, including insomnia and non-restorative sleep
• Irritability, anxiety, depression and shortened emotional fuse
• Dizziness, balance problems or visual tracking difficulty

• A detailed history covering diagnosed concussions, suspected but undiagnosed hits, position played and years of exposure
• Neurological examination, including balance, coordination, eye movement and vestibular testing
• Neuropsychological testing that measures memory, processing speed, attention and executive function against expected norms
• Imaging (MRI, sometimes specialized sequences) primarily to rule out other causes rather than to confirm concussion
• Screening for depression, anxiety, sleep disorder and headache disorder, which frequently accompany post-concussive complaints

• Sideline and locker-room concussion evaluations, and any league concussion-protocol documentation
• Baseline and post-injury neurocognitive testing performed by teams
• Game film or play-by-play material corroborating specific impacts
• Team injury reports, athletic training room logs and daily treatment notes
• Team physician and consulting specialist records, including imaging reports
• Surgical operative reports and post-operative rehabilitation notes
• Contracts, transaction history and roster or practice-squad records showing dates of employment
• Post-career medical records from primary care doctors, orthopedists and other specialists

A concussion sustained during practice, a game, training or team travel may be treated as an industrial injury because it arose out of and in the course of employment.

Where a claim is accepted, workers' compensation systems typically address medical treatment for the accepted condition and may address permanent impairment.

Because head injuries frequently coexist with neck, spine and psychological complaints, claims involving concussion are often evaluated alongside other body systems rather than in isolation.

Rules differ by state and by sport. Eligibility factors and types of compensation cover the general framework.

• Neurology and concussion-clinic evaluation
• Neuropsychological testing and cognitive rehabilitation
• Vestibular and vision therapy for balance and eye-tracking problems
• Headache management and sleep evaluation
• Psychological or psychiatric treatment where mood symptoms are related

• Cognitive impairment can be difficult to quantify, so permanent disability evaluation often relies heavily on formal neuropsychological testing rather than self-report.
• Head-injury claims are frequently disputed on causation — insurers may argue that symptoms come from aging, unrelated conditions or non-industrial factors.
• Where the condition affects the ability to work, evidence about the specific work functions that are limited generally matters more than a diagnosis label alone.