Is there a second-degree concussion (mild traumatic brain injury)?

Medical Advisory BoardAll articles are reviewed for accuracy by our Medical Advisory Board
Educational purpose only • Exercise caution as content is pending human review
Article Review Status
Submitted
Under Review
Approved

Last updated: April 24, 2025View editorial policy

Personalize

Help us tailor your experience

Which best describes you? Your choice helps us use language that's most understandable for you.

From the Guidelines

There is no clear evidence to support the existence of a 2nd degree concussion as a distinct medical diagnosis, as modern concussion management focuses on individual symptom assessment and personalized recovery plans rather than rigid classification. The concept of grading concussions, including a 2nd degree concussion, is somewhat outdated, as it does not account for the unique characteristics and symptoms of each individual's concussion 1. According to the most recent study, the focus has shifted towards identifying biomarkers for mild traumatic brain injury (mTBI) to aid in diagnosis and inform treatment guidelines 1.

Key Points to Consider

  • Concussion is defined as a complex pathophysiological process affecting the brain, induced by traumatic biomechanical forces, and may result in a graded set of clinical syndromes that may or may not involve loss of consciousness 1.
  • The clinical symptoms of concussion largely reflect a functional disturbance rather than structural injury, and resolution of the clinical and cognitive symptoms typically follows a sequential course 1.
  • Modern concussion management emphasizes individual symptom assessment and personalized recovery plans, rather than relying on a rigid classification system 1.
  • The use of clinical decision tools and factors can help identify patients requiring follow-up care for postconcussive syndrome or delayed sequelae after ED discharge 1.

Treatment and Management

Treatment for concussion typically involves physical and cognitive rest for 24-48 hours, followed by a gradual return to normal activities as symptoms improve. Acetaminophen may be used for headache pain, but NSAIDs like ibuprofen should be avoided initially due to bleeding risk. Medical attention is necessary for proper diagnosis and management, especially if symptoms worsen or persist beyond 1-2 weeks. It is essential to prioritize individualized care and monitoring, rather than relying on a specific grading system, to ensure the best possible outcomes for patients with concussion.

From the Research

Definition and Classification of Concussions

  • Concussions are defined as a traumatically induced transient disturbance of brain function, involving a complex pathophysiological process 2.
  • Concussions are a subset of mild traumatic brain injury (MTBI), which is generally self-limited and at the less-severe end of the brain injury spectrum 2.

Degrees of Concussions

  • The provided studies do not explicitly mention a "2nd degree concussion" 2, 3, 4, 5, 6.
  • However, concussions can be classified based on their severity, with most being considered mild 2.

Management and Treatment of Concussions

  • Concussion management should be individualized, based on predominant signs and symptoms, and can include subsymptom threshold aerobic exercise, cervical physical therapy, vestibulo-ocular rehabilitation, behavioral and cognitive psychotherapy, and some symptom-specific pharmacological therapies 3.
  • Treatment for concussion and persistent postconcussive symptoms (PPCS) should be based on a comprehensive evaluation, including a history, physical examination, and additional tests as clinically indicated 3.

Return to Play (RTP) Protocols

  • RTP after concussion should occur only with medical clearance from a licensed healthcare provider trained in the evaluation and management of concussions 2.
  • A RTP progression involves a gradual, step-wise increase in physical demands, sports-specific activities, and the risk for contact, with symptoms being resolved before returning to exercise 2.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Concussion: Evaluation and management.

Cleveland Clinic journal of medicine, 2017

Research

Concussion.

The American journal of medicine, 2017

Research

Concussion Management Practice Patterns Among Sports Medicine Physicians.

Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine, 2016

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

Have a follow-up question?

Our Medical A.I. is used by practicing medical doctors at top research institutions around the world. Ask any follow up question and get world-class guideline-backed answers instantly.