Julio tripped on the stairs and fell. When his friend asked if he was OK, Julio said that he felt nauseous and then he lost consciousness. What do these symptoms most likely indicate about Julio?

Nausea followed by loss of consciousness after a fall can indicate a head injury, such as a concussion. A fracture, sprain, or stretched ligament would more typically cause pain, swelling, or difficulty moving a limb, rather than loss of consciousness. Julio should get urgent medical attention.

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