What are some signs and symptoms of severe head trauma?

Each brain injury is a unique event with a unique set of effects, there are some common difficulties arising from severe head trauma, including:

• Headaches;
  
• Confusion;
  
• Lightheadedness;
  
• Full or partial paralysis;
  
• Dizziness;
  
• Blurred vision or tired eyes;
  
• Ringing in the ears;
  
• Bad taste in the mouth;
  
• Fatigue or lethargy;
  
• Changes in sleep patterns;
  
• Behavioural or mood changes;
  
• Trouble with memory, concentration, attention, or thinking;
  
• Repeated vomiting or nausea;
  
• Convulsions or seizures;
  
• Inability to awaken from sleep;
  
• Dilation of one or both pupils of the eyes;
  
• Slurred speech;
  
• Weakness or numbness in the extremities;
  
• Loss of coordination;
  
• Increased restlessness or agitation.