For mild concussions, most children should recover entirely within a week or two. More severe concussions may take a few months before symptoms have completely subsided from the injury. It is common for some symptoms to persist even once the child has healed enough for it to be deemed safe for them to return to their normal activities. It is very important to follow the instructions offered by the healthcare provider who treated your child for the concussion to allow for a complete recovery. Rest is one of the most important aspects of concussion recovery, along with avoiding any activities that may result in another concussion before the first has fully healed to prevent worsened effects or severe brain damage.