You should return to the ER if symptoms suddenly worsen or new symptoms appear. Warning signs include severe or worsening headaches, repeated vomiting, confusion, or fainting. These may indicate a serious brain injury.

Other red flags include numbness, weakness, trouble speaking, chest pain, or shortness of breath. Loss of bladder or bowel control can signal spinal injury. These symptoms require immediate attention.

If something feels wrong or different than before, it’s better to be cautious. Returning to the ER can prevent serious complications.