Signs and Symptoms of TBI

Signs and symptoms of neurological impairment caused by TBI depend on which structures in the brain are damaged.

Common symptoms of brain injury include:

  • Anxiety, nervousness
  • Behavioral changes:
    • difficulty controlling urges (disinhibition)
    • impulsiveness
    • inappropriate laughter
    • irritability
  • Blurry or double vision (diplopia)
  • Depression
  • Difficulty concentrating or thinking
  • Difficulty finding words or understanding the speech of others (aphasia)
  • Difficulty swallowing (dysphagia)
  • Dizziness
  • Headache
  • Incoordination of movements
  • Lightheadedness
  • Loss of balance; difficulty walking or sitting
  • Loss of memory
  • Muscle stiffness and/or spasms
  • Seizures
  • Sleep difficulties (more or less sleep than pre-injury)
  • Slurred and/or slowed speech
  • Tingling, numbness, pain, or other sensations
  • Sense of spinning (vertigo)
  • Weakness in one or more limbs, facial muscles, or on an entire side of the body

Publication Review By: Stanley J. Swierzewski, III, M.D.

Published: 31 Aug 2001

Last Modified: 08 Oct 2015