Recognize Signs

Identify key neurological symptoms to watch for.

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Recognizing Traumatic Brain Injury Symptoms

The clinical presentation of a traumatic brain injury (TBI) can vary significantly based on the injury's severity, ranging from subtle cognitive changes to severe, life-threatening neurological deficits. Emotional and behavioral shifts, such as heightened irritability and mood swings, are also frequent consequences.

Common Indicators of Mild to Moderate TBI

Patients experiencing a mild TBI (including concussion) or a moderate injury often report a cluster of symptoms impacting cognitive and physical function. These typically include:

  • Persistent headache or a sensation of pressure within the head.

  • States of confusion or feeling mentally "foggy."

  • Episodes of dizziness or lightheadedness.

  • Visual disturbances, such as blurred vision.

  • Increased sensitivity to light or loud noises.

  • Difficulties with memory recall or maintaining concentration.

  • Gastrointestinal distress, including nausea or vomiting.

  • Alterations in sleep habits, such as insomnia or excessive drowsiness.

  • Emotional lability, characterized by irritability, sadness, or noticeable mood fluctuations.

  • Reporting an unusual or unpleasant taste in the mouth.

Critical Warning Signs: When to Seek Immediate Care

Certain symptoms following a head injury signal a moderate to severe TBI and necessitate immediate emergency medical attention. Do not delay seeking care if any of the following are observed:

  • A worsening or unrelieved headache.

  • Repeated episodes of vomiting or persistent nausea.

  • Impairment of speech clarity (slurred speech).

  • Manifestation of weakness, numbness, or diminished physical coordination.

  • Experiencing convulsions or seizures.

  • Inability to awaken or difficulty staying conscious.

  • Pronounced increase in confusion, agitation, or restlessness.

  • Unequal pupil size (one or both pupils appear dilated).

  • Loss of consciousness that persists for any significant duration.

Symptom Manifestation in Young Children

In infants and young children, TBI symptoms may be non-verbal and observed through changes in behavior and routine. Key indicators include:

  • Increased or excessive crying.

  • Notable changes in established eating or sleeping patterns.

  • A loss of interest in favorite activities or toys.

  • Developing difficulty walking or speaking clearly.

  • Appearing significantly more tired or irritable than is typical.