[Image: Brain depicting a concussion] Common Causes of Concussions Symptoms of Concussions Symptoms can vary in onset time and severity: Physical Symptoms Cognitive Symptoms Emotional Symptoms Sleep-Related Symptoms Note: Signs of severe concussions necessitating immediate medical attention include loss of consciousness, persistent vomiting, worsening headaches, seizures, unequal pupil sizes, slurred speech, weakness, or numbness. Treatment […]