Symptoms of a concussion include: headache, nausea or vomiting, difficulty thinking normally, memory problems, difficulty walking or dizziness, vision problems, fatigue, mood changes, changes in sleep patterns, seeing flashing lights, the feeling of “losing time,” and a loss of consciousness. These can be both immediate and delayed symptoms—meaning that some may not start for weeks or months after the injury—and they can range in severity from mild to severe.
Severe symptoms that require immediate medical care include: changes in consciousness or alertness, becoming and remaining unconscious, seizures, muscle weakness on one or both sides, persistent confusion, repeated vomiting, unequal pupils, unusual eye movements and walking problems.
Delayed symptoms that may not show up for days after the concussive event can include: concentration and memory problems, irritability and personality changes, sensitivity to light and noise, sleep problems, depression, and taste and smell disorders.
Concussion symptoms in children
Concussions in toddlers and young children may be hard to recognize if they cannot communicate how they feel. Nonverbal signs of a concussion include: listlessness or tiring easily, irritability or crankiness, changes in sleeping or eating patterns, lack of interest in the child’s favorite toys, and unsteady walking or a loss of balance.