A concussion can follow a blow or jolt to the head, or a body impact that moves the head and brain rapidly. A suspected head injury deserves medical evaluation.

Symptoms can change after the collision

Headache, dizziness, light or noise sensitivity, difficulty concentrating, memory problems, and changes in mood or sleep may occur. Some symptoms appear hours or days later.

Emergency warning signs

Call 911 or seek emergency care immediately for a worsening headache that does not go away, repeated vomiting, seizures, new weakness or numbness, slurred speech, marked confusion, loss of consciousness, or difficulty waking. Do not wait for a telemedicine appointment.

Evaluation and testing depend on the findings

A clinician reviews the injury history, symptoms, and examination to decide what further testing or consultation is appropriate. A brain scan is not routinely needed to identify a concussion; CT may be used when bleeding is a concern. Imaging decisions are individualized.

Connect follow-up with your recovery plan

Bring emergency-care records, test reports, and medication information to follow-up. Describe changes in sleep, concentration, work, driving, and other daily activities. Ask for instructions about returning to activities and avoiding another injury.

Florida Injury Centers provides physician-led injury follow-up and coordinates specialist consultation when indicated. Read about delayed symptoms and return-to-work planning.

Call 866-402-4250 to discuss physician-led auto injury care. Call 911 for a medical emergency.

Florida Injury Centers — Florida’s Medical Home for Injury Care.

Patient education: CDC concussion symptoms and danger signs.