37 Symptoms of Old Head Injury and How to Treat Them
Any head injury — including concussion — can cause symptoms that last for years after the injury. Up to 30% of post-concussion patients experience symptoms beyond the expected three-month recovery window. Other types of brain injury, such as severe traumatic brain injury (TBI), transient ischemic attack (TIA), certain viral or bacterial illnesses, carbon monoxide poisoning, surgery, and chemical exposure can result in lingering symptoms, too.