Symptoms of concussion are different for everyone. You can have symptoms that you feel in your body, that affect how you think, that affect how you feel, and that affect how you sleep.

Each of these types of symptoms can interact with one another and become worse or different. For example, a lack of sleep together with a headache and irritability can change your ability to concentrate.

Symptoms of concussion

​ Thinking​​

• poor concentration
• hard time remembering
• hard time thinking of words
• feeling slowed down
• trouble thinking clearly

​ Physical body​​

• nausea
• headache
• dizziness
• clumsiness
• no energy
• sensitivity to noise and light

​ Feelings​​

• sad
• angry
• anxious
• moody
• irritable

​ Sleep​​

• sleep more than usual
• sleep less than usual
• trouble falling and staying asleep
• still tired after sleeping

These symptoms are a normal part of recovery and often get better on their own. It is important to be patient with yourself and focus on the recovery strategies described later in this module. Everyone feels tired, forgets things, or has trouble concentrating sometimes.​