Brain Injury

Symptoms

Traumatic brain injury, including concussions, can have wide-ranging physical and psychological effects. Some signs or symptoms may appear immediately after the traumatic event, while others may appear days or weeks later.

Mild traumatic brain injury

The signs and symptoms of mild traumatic brain injury may include:

  • Loss of consciousness for a few seconds to a few minutes
  • No loss of consciousness, but a state of being dazed, confused or disoriented
  • Memory or concentration problems
  • Headache
  • Dizziness or loss of balance
  • Nausea or vomiting
  • Sensory problems, such as blurred vision, ringing in the ears or a bad taste in the mouth
  • Sensitivity to light or sound
  • Mood changes or mood swings
  • Feeling depressed or anxious
  • Fatigue or drowsiness
  • Difficulty sleeping
  • Sleeping more than usual

Moderate to severe traumatic brain injuries

Moderate to severe traumatic brain injuries can include any of the signs and symptoms of mild injury, as well as the following symptoms that may appear within the first hours to days after a head injury:

  • Loss of consciousness from several minutes to hours
  • Profound confusion
  • Agitation, combativeness or other unusual behaviour
  • Slurred speech
  • Inability to awaken from sleep
  • Weakness or numbness in fingers and toes
  • Loss of coordination
  • Persistent headache or headache that worsens
  • Repeated vomiting or nausea
  • Convulsions or seizures
  • Dilation of one or both pupils of the eyes
  • Clear fluids draining from the nose or ears

Children’s symptoms

Infants and young children with brain injuries may lack the communication skills to report headaches, sensory problems, confusion and similar symptoms. In a child with traumatic brain injury, you may observe:

  • Change in eating or nursing habits
  • Persistent crying and inability to be consoled
  • Unusual or easy irritability
  • Change in ability to pay attention
  • Change in sleep habits
  • Sad or depressed mood
  • Loss of interest in favorite toys or activities

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