If someone bangs their head and feels dizzy, it is easy to make the connection between the way they feel and what happened to them, but sometimes TBI symptoms appear with a delayed effect. In these instances, doctors, as well as patients, are challenged to make the right diagnosis. For example, nausea and headaches have so many possible causes it is not always immediately apparent that they are the results of a head injury sustained some time beforehand. The injured person might not make the connection, and since externally they appear to be perfectly fine their family and friends fail to recognize this health issue.
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