Persistent impairment based symptoms post mild traumatic brain injury: Does a standard symptom scale detect them?

Area of Science:

• Neuroscience
• Clinical Psychology
• Rehabilitation Medicine

Background:

• Mild Traumatic Brain Injury (mTBI) can lead to prolonged recovery periods.
• Assessing persistent symptoms beyond the typical recovery window is crucial for patient management.

Purpose of the Study:

• To investigate symptoms in patients beyond the expected recovery period post mild Traumatic Brain Injury (mTBI).
• To identify potential indicators of impairment in mTBI patients who report ongoing symptoms or are initially asymptomatic.

Main Methods:

• Ninety-four individuals (62 mTBI, 32 controls) participated.
• mTBI group split into symptomatic (n=33) and asymptomatic (n=29).
• Utilized demographic questionnaire, 8 impairment-specific tools, and the Head Injury Scale (HIS).

Main Results:

• Symptomatic mTBI group showed higher scores on all instruments, including HIS, compared to controls (P<0.05).
• Asymptomatic mTBI group had elevated neck disability and hyperarousal scores (p<0.035), but not HIS (p>0.093).
• Clinically relevant scores on at least one tool were found in 94% of symptomatic and 62% of asymptomatic mTBI participants.

Conclusions:

• Persistent impairments are evident in a significant portion of mTBI patients beyond the expected recovery.
• Many individuals initially reporting as symptom-free show clinically relevant scores on impairment tools.
• Standard post-mTBI symptom scales like the HIS may frequently fail to detect persisting symptoms.