In Spain, concussion in Sports is managed by sports medicines. Sport-related concussion is a traumatic brain injury caused by biomechanical forces transmitted to the brain that produces transient neurological dysfunction without macroscopic structural injury on standard imaging. US emergency departments treat approximately 1.7-3 million sport-related concussions per year and total annual incidence including unreported cases is estimated at 3.8 million.
Sport-related concussion (ICD-10: S06.0X0A through S06.0X9S depending on duration of loss of consciousness and encounter type) is defined by the 6th International Consensus Statement on Concussion in Sport (Amsterdam 2022) as a traumatic brain injury caused by a direct blow to the head, neck, or body with an impulsive force transmitted to the brain, occurring in sport and exercise-related activities and producing transient neurological signs or symptoms. The diagnosis is clinical and does not require structural imaging changes; standard CT and MRI are typically normal. Pathophysiology involves a neurometabolic cascade with potassium efflux, glutamate release, calcium influx, mitochondrial dysfunction, decreased cerebral blood flow, and axonal stretch injury that produces functional but not macroscopic structural damage. Concussion is one form of mild traumatic brain injury and the terms are often used interchangeably in sport medicine.
The key symptoms of Concussion in Sports are: Confusion, disorientation, or a 'dazed' look at the time of impact; brief memory disturbance (retrograde or anterograde amnesia) for events around the injury., Headache, often described as pressure or dull, sometimes throbbing — present in 80-90% of cases., Dizziness, lightheadedness, or feeling 'off-balance' — second most common symptom and a marker of vestibular involvement., Nausea or vomiting, especially in the first few hours after injury., Sensitivity to light (photophobia) and noise (phonophobia), often persisting for days., Slowed thinking, difficulty concentrating, mental fogginess, and decreased reaction time on cognitive testing., Sleep disturbance — early difficulty initiating sleep, then often hypersomnia followed by insomnia or fragmented sleep..
Diagnosis is clinical, made at the side of play and refined over the following hours and days. The on-field assessment begins by removing the athlete from competition any time concussion is suspected; the Maddocks-style orientation questions ('What venue are we at? Which half is it? Who scored last? What team did you play last week? Did your team win the last game?') screen for cognitive impairment. The Sport Concussion Assessment Tool 6th edition (SCAT6) is the most widely used on-field and clinic instrument and incorporates symptom checklist, cognitive testing (orientation, immediate and delayed memory, concentration), neurological screening, balance testing (modified BESS), and tandem gait. Pediatric athletes ages 8-12 use the Child SCAT6 and ages 5-12 the optimized pediatric tool. Imaging (CT or MRI) is reserved for any sign of more severe injury (focal deficit, suspected skull fracture, prolonged loss of consciousness, vomiting, anticoagulation use). The Canadian CT Head Rule and PECARN pediatric rules guide imaging decisions. Symptoms are tracked daily with the SCAT6 or Post-Concussion Symptom Scale. Vestibular and oculomotor screening (VOMS), reaction time, and balance plate testing identify deficits and guide rehabilitation. Neuropsychological testing is added at the discretion of the team, especially for prolonged recovery or pre-existing baseline data. Blood biomarkers (S100B, GFAP, UCH-L1, and combined panels such as the Banyan Brain Trauma Indicator) are emerging tools that may help triage need for CT in adults but are not routinely used for concussion management in sport. The diagnostic process continues throughout the graduated return-to-play stages: any return of symptoms with cognitive or physical exertion requires a step back, and final medical clearance is required from a clinician trained in concussion management.
Most adult athletes recover within 10-14 days and most adolescents within 4 weeks when modern protocols (early sub-threshold exercise, graduated return-to-play, targeted rehabilitation) are followed. Persistent post-concussion symptoms beyond expected recovery time occur in 10-30% and are more common in adolescents, female athletes, those with prior concussions, and those with pre-existing migraine, mood, attention, or sleep disorders. Multidisciplinary rehabilitation resolves persistent symptoms in 70-90% of cases within 3-6 months. Recurrent concussions are associated with longer recovery from each episode and may be linked to neuropsychological changes; the impact of cumulative subconcussive head impact exposure remains under active investigation. Catastrophic outcomes (second-impact syndrome, intracranial hemorrhage) are rare when removal-from-play protocols are followed. Long-term outcomes of repetitive head impact exposure in contact sport, including chronic traumatic encephalopathy, have been documented in autopsy series of older athletes, though the relationship to clinical syndromes during life is being defined. Adherence to current consensus protocols, early recognition, and individualized return-to-play decisions are the most important modifiable factors.
Sport-medicine physicians, neurologists, neuropsychologists, and athletic trainers experienced in concussion management are essential for accurate diagnosis, individualized treatment, and safe return to play. Specialist involvement is particularly important for adolescent athletes, persistent symptoms beyond 2-4 weeks, recurrent concussions, and pre-existing migraine, anxiety, depression, ADHD, or learning disorder.
Find specialists →Most adults recover within 10-14 days; most adolescents within 4 weeks. Sub-threshold exercise typically begins at 24-48 hours; return to school in 1-2 weeks with accommodations; full academic load within 2-4 weeks; return to non-contact training at 1-2 weeks; full contact and competition typically 2-4 weeks after symptom resolution. Persistent symptoms (>4 weeks adolescents, >2 weeks adults) require multidisciplinary rehabilitation.
After 24-48 hours of relative rest, begin sub-symptom-threshold light aerobic exercise (walking, stationary cycling) for 20-30 minutes daily at a heart rate that does not provoke significant symptom exacerbation. Progress through the 6-stage return-to-sport protocol with at least 24 hours between stages; do not advance if symptoms return. Avoid contact and high-fall-risk activities until medical clearance has been granted.
Choose a sport-medicine physician, neurologist, or athletic trainer with explicit training and certification in concussion (CAQ in sports medicine, board certification in sport neurology, ImPACT credentialing). For adolescents, prefer a clinician integrated with the school's return-to-learn process. For prolonged symptoms, choose a multidisciplinary concussion clinic with vestibular therapy, neuropsychology, and behavioral health on site.
Medically reviewed by AIHealz Medical Editorial Board · May 13, 2026
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