Concussion symptoms can appear at different times for different people. In many cases, symptoms manifest immediately after the injury, but it’s also common for them to develop gradually over a few hours or even days. This delayed onset can make concussions tricky to recognize right away.   Immediately after a head injury, you may experience symptoms such as confusion, dizziness, or a headache. However, other symptoms like difficulty concentrating, memory problems, irritability, and sleep disturbances may only become apparent as time goes on. It's important to monitor any changes in your wellness closely in the days and weeks following a head injury.   If you or someone you know has sustained a head injury, even if it seems minor, it's crucial to watch for these symptoms and seek medical attention if they appear. A healthcare professional can offer a personalized assessment to determine if a concussion has occurred. If it has, your doctor will help you manage your symptoms to prevent your condition from worsening.