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Signs and Symptoms of a Concussion

 Signs and symptoms of a concussion will vary. An individual’s unique experience and the force of impact will dictate the presentation of specific red flags. There are different types of symptoms associated with concussions, some of which can alter a state of mental awareness and consciousness. Take note that concussions may or may not cause loss of consciousness. Some people report “blacking out” or having “knocked out”.

Concussion Warning Signs

Immediate recognition of warning signs is critical to your health. The CDC lists four categories under which symptoms are listed. A concussed person may exhibit problems and difficulties in:


  • Inability to think clearly
  • Feeling ‘foggy’
  • Lack of concentration
  • Decreased attention span
  • Loss of memory


  • Blurred vision and slurred speech
  • Imbalance and poor coordination
  • Sensitivity to light and noise
  • Nausea and/or vomiting
  • Headaches and dizziness


  • Enhanced emotional state
  • Irritability
  • Anxiety
  • Sadness

Sleep disturbance

  • Sleeping more or less than usual
  • Trouble sleeping
  • Persistent drowsiness
  • Altered sleeping patterns












See a Neurosurgeon at NOSS

Dilated pupils and seizures are also major warning signs. Do not ignore the signs of a concussion. Be aware of what you or a loved one are experiencing after a hard blow to the head or body. Seek immediate medical attention if you present with any symptoms above or persistent, worsening symptoms.