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Also known as cerebral concussion, minor head trauma, mild traumatic brain injury, mTBI, brain concussion

A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that temporarily affects brain functioning. Symptoms may include headache, dizziness, difficulty with thinking and concentration, sleep disturbances, a brief period of memory loss, brief loss of consciousness, problems with balance, nausea, blurred vision, and mood changes. Concussion should be suspected if a person hits their head and experiences any of the symptoms of concussion. Signs and symptoms of a concussion usually occur within minutes to hours of the injury, usually within 72 hours. However, symptoms m

Key facts

Medical condition.name: Concussion
Medical condition.image: Concussion mechanics.svg
Medical condition.caption: Acceleration (g-forces) can exert rotational forces in the brain, especially the midbrain and diencephalon.
Medical condition.field: Emergency medicine, neurology
Medical condition.synonyms: Mild brain injury, mild traumatic brain injury (mTBI), mild head injury (MHI), minor head trauma
Medical condition.symptoms: Headache; trouble with thinking, memory, or concentration; nausea; blurry vision; sleep disturbances; mood changes
Medical condition.complications: Chronic traumatic encephalopathy, Parkinson's disease, depression, post-concussion syndrome
Medical condition.duration: Up to 4 weeks
Medical condition.causes: Motor vehicle collisions, falls, sports injuries, bicycle accidents
Medical condition.risks: Physical violence, drinking alcohol, playing contact sports such as American football, playing martial arts such as muay thai, previous history of concussion