Yes. A concussion is often referred to by doctors as a “mild TBI.” Both terms are used when a person experiences a change in normal brain function for no longer than a minutes following trauma. Concussions are usually not life-threatening, but their effects can be serious. Affects from a concussion can range from mild to severe and may include one or more of the following symptoms:

• Changes in vision;
• Confused;
• Feeling drowsy;
• Feeling of "lost time;"
• Hard to arouse;
• Headache;
• Loss of consciousness;
• Memory loss (amnesia) of events before the injury or immediately after; and/or
• Nausea and vomiting.

See Resources
Understanding TBI Part 1: What happens to the brain during injury and in the early stages of recovery from TBI?
This information sheets is written for consumers through a collaboration between the Model Systems Knowledge Translation Center (MSKTC) and the TBI Model Systems of Care. Spanish version (en español)

Concussion Recovery
This fact reviews symptoms, recovery, and long-term outcomes. It also talks about where to get support after a concussion. Spanish version (en español)

MEDLINEplus: Head and Brain Injuries
This easy to use website of the National Library of Medicine provides links to articles, research reports, and organizations covering various aspects of head and brain injuries. Some information is available in Spanish.

Road to Rehabilitation Part 8; Mild Injury and Concussion (PDF)
Part 8 of 8 in The Road to Rehabilitation series produced by the Brain Injury Association of America