If you think an someone might have a traumatic brain injury (TBI), take them to the doctor.

Symptoms of mild TBI include:

• Low-grade headache that won’t go away
• Having more trouble than usual remembering things, paying attention or concentrating, organizing daily tasks, or making decisions and solving problems
• Slowness in thinking, speaking, acting, or reading
• Getting lost or easily confused
• Feeling tired all of the time, lack of energy or motivation
• Change in sleep pattern—sleeping much longer than before, having trouble sleeping
• Loss of balance, feeling light-headed or dizzy
• Increased sensitivity to sounds, lights, distractions
• Blurred vision or eyes that tire easily
• Loss of sense of taste or smell
• Ringing in the ears
• Change in sexual drive
• Mood changes like feeling sad, anxious, or listless, or becoming easily irritated or angry for little or no reason

A person with moderate or severe TBI may show the symptoms listed on the left, but may also have:

• A headache that gets worse or does not go away
• Repeated vomiting or nausea
• Convulsions or seizures
• Inability to wake up from sleep
• Dilation of one or both pupils
• Slurred speech
• Weakness or numbness in the arms or legs
• Loss of coordination
• Increased confusion, restlessness, or agitation