Head injuries — from sports impacts, falls, motor vehicle accidents, and other mechanisms — range from mild concussions managed with rest and monitoring to severe traumatic brain injuries (TBIs) requiring emergency neurosurgical intervention. Medical clinics and urgent care centers evaluate the majority of head injuries that do not require emergency transport, providing structured assessment to identify high-risk features warranting emergency referral and managing lower-risk injuries with appropriate guidance and follow-up. This guide explains clinical head injury assessment.
Concussion: The Most Common Head Injury
Concussion is a mild traumatic brain injury resulting from biomechanical force to the head that causes temporary neurological dysfunction without structural brain damage. Symptoms include headache, dizziness, “foggy” feeling, difficulty concentrating, memory impairment, balance problems, nausea, light and sound sensitivity, and emotional changes. Loss of consciousness is not required for concussion diagnosis and occurs in less than 10% of concussions. Diagnosis is clinical — based on mechanism and symptoms.
Red Flag Assessment
The clinical head injury evaluation focuses on identifying features requiring CT imaging and emergency referral: persistent or worsening headache, repeated vomiting (more than twice), seizure, deteriorating consciousness or progressive confusion, significant amnesia for the event, severe mechanism (high-speed collision, fall from height), blood thinning medications, age over 65, coagulopathy, focal neurological deficits, and signs of skull fracture (Battle’s sign — bruising behind the ear; raccoon eyes — periorbital bruising; cerebrospinal fluid from ears or nose). The Canadian CT Head Rule and NEXUS criteria provide clinical decision support for CT indication.
Concussion Management
Acute concussion management involves physical and cognitive rest in the first 24–48 hours, followed by gradual return to activity using the sport-specific return-to-sport protocol (learn, light aerobic, sport-specific exercise, non-contact drills, full practice, return to competition). Premature return to activity risks prolonged recovery and second-impact syndrome (rare but catastrophic).
Conclusion
Head injury assessment requires structured clinical evaluation to distinguish the vast majority of minor injuries managed conservatively from the minority requiring emergency imaging and intervention. When in doubt about a head injury’s severity, seek clinic or emergency evaluation — the consequences of missing a significant intracranial injury are too serious to manage conservatively on the basis of hope.
FAQs – Head Injuries
Q1. Should I wake up someone with a head injury during the night?
A: Old advice recommended waking head-injured patients every few hours to check on them. Current guidance focuses on watching for symptoms (worsening headache, vomiting, difficulty waking) rather than mandatory periodic wakening in low-risk patients cleared by a clinician. Follow specific instructions from the evaluating provider.
Q2. How long does concussion recovery take?
A: Most concussions resolve within 2 weeks in adults and 4 weeks in children. A minority of patients develop post-concussion syndrome with persistent symptoms lasting weeks to months. Risk factors for prolonged recovery include prior concussions, prior mental health conditions, adolescent age, and female sex.
Q3. Can children play sports after a concussion?
A: Not until fully asymptomatic and cleared through the formal return-to-sport protocol by a clinician experienced with concussion. All US states have return-to-play laws requiring medical clearance before athlete return to competition following suspected concussion.
Q4. Does a bump on the head mean a more serious injury?
A: Counterintuitively, no. A scalp hematoma (goose egg) represents bleeding in the scalp soft tissue, not necessarily in the brain. The absence of an external bump does not mean the injury is minor. Symptom pattern and neurological assessment, not external appearance, determine injury severity.
Q5. What is chronic traumatic encephalopathy (CTE)?
A: CTE is a progressive degenerative brain disease associated with repetitive head impacts — found in athletes with histories of multiple concussions and in combat veterans. Currently diagnosed only at autopsy, it is associated with cognitive decline, behavioral changes, and depression. It represents a serious public health concern in contact sports and motivates current efforts to reduce head impact exposure.
