Which term denotes serious head injury characterized by one or more of the following: loss of consciousness, amnesia, seizures, or a change in mental status?

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The term "concussion" refers to a head injury that can result in symptoms such as loss of consciousness, amnesia, seizures, or a change in mental status. A cerebral contusion refers to a bruise on the brain that can occur after a head injury, but may not necessarily involve the same symptoms as a concussion. Coma refers to a state of unconsciousness in which a person cannot be awakened, and syncope refers to a sudden loss of consciousness due to a drop in blood pressure.

Which Term Denotes Serious Head Injury Characterized by One or More