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How was your concussion diagnosed?

Minor head injuries are a routine occurrence. From toddlers falling against  tables, kids bumping heads playing ball, to an elderly person falling down,  people often lead with their heads when they move about. Usually, a few stars  are seen, a headache happens, and all is well. Sometimes it isn't so clear. The  person may be knocked out for a few seconds, may  vomit, and perhaps may have  some loss of memory, but by the time the doctor visits the bedside, everything is  back to normal. The diagnosis of a concussion is made. But now what? What do you do with somebody who acts and appears normal, even  though there was a history of a head injury? Who will have bleeding in their  brain and who won't? Who needs a CT scan and who just needs to go home? Less than a generation ago, CT scans didn't exist, and observation was the  key to head injury care. If the patient did well, they went home; if not, a  neurosurgeon was called in to evaluate the patient. Now, CT scans can be found in even the smallest hospital,  but just because the machine is there doesn't mean that it should be used  indiscriminately. Putting aside the cost, the radiation risk of an unneeded test  is significant. While scientific studies can provide guidelines as to who needs imaging  studies, patients and their families want more than the doctor's opinion; they  want the reassurance of hard evidence like an  X-ray or CT. Every case needs to  be considered individually. However, here are some guidelines that a doctor  may use to decide: "To CT or no CT; that is the question." The Canadian CT Head Rule states that a CT scan is required if any of the  following exist:
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