Hello. Thanks for asking from HCM. I can understand your concern. Symptoms of headache, talking difficulty could be due to concussion or brain damage following trauma. It can only be confirmed after proper evaluation and Ct scan of head. In your sister, it is good that 3 days have already passed and she is till conscious, oriented. In case of brain damage, usually symptoms like vomiting, focal deficit, fits, memory impairment may occur along with talking difficulty. One more important point is usually emergency surgery is needed within 4 to 8 hours for maximum benefit. If a person survives first 72 hours without need of surgery, it is unlikely he might need surgery. From above discussion, it is clear that you are right about use of CT to confirm head injury, but use of it after 3 days is not very informative. You can still go for it to rule out brain damage. You should observe her for few signs of dangerous head injury : vomiting : fits : decreasing consciousness : onset of focal deficit If any of above signs, then you must consult ER and get CT scan done. Further management will be decided after CT report. Hope it will help her. Thanks. Take care.