What is Brown-Séquard syndrome?

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Last updated: May 6, 2025View editorial policy

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From the Guidelines

Brown-Séquard syndrome is a neurological condition that requires prompt diagnosis and treatment to minimize morbidity, mortality, and improve quality of life, and it is characterized by damage to one half of the spinal cord, causing a distinctive pattern of symptoms. The syndrome presents with ipsilateral (same side) loss of motor function, proprioception, and vibration sense, along with contralateral (opposite side) loss of pain and temperature sensation, as a result of different sensory pathways crossing at different levels in the spinal cord. Some key points to consider in the diagnosis and management of Brown-Séquard syndrome include:

  • Ipsilateral loss of motor function, proprioception, and vibration sense
  • Contralateral loss of pain and temperature sensation
  • Trauma, tumors, disc herniation, multiple sclerosis, or vascular issues affecting the spinal cord as potential causes
  • Diagnosis involving neurological examination, MRI imaging, and sometimes cerebrospinal fluid analysis
  • Treatment depending on the underlying cause, which may include surgery for tumors or compression, steroids to reduce inflammation, physical therapy for rehabilitation, and pain management, as seen in other neurological conditions such as Guillain-Barré syndrome 1. Early intervention is crucial to improve outcomes, and treatment should be initiated as soon as possible to minimize permanent neurological deficits. In terms of prognosis, it varies based on the cause, extent of damage, and how quickly treatment is initiated, highlighting the importance of prompt diagnosis and treatment. While the provided evidence does not directly discuss Brown-Séquard syndrome, the principles of neurological diagnosis and management can be applied, and the importance of early intervention is emphasized in the treatment of other neurological conditions, such as Bing-Neel syndrome 1.

From the Research

Definition and Causes of Brown-Séquard Syndrome

  • Brown-Séquard syndrome is a neurological condition characterized by a lesion in the spinal cord, resulting in hemisection of the cord [(2,3,4,5)].
  • The syndrome can occur due to various causes, including spinal epidural hematoma 2, idiopathic myelitis 3, chiropractic manipulation 5, and parainfectious associations with COVID-19 4.

Clinical Presentation

  • The clinical presentation of Brown-Séquard syndrome typically includes ipsilateral motor and sensory deficits, as well as contralateral pain and temperature sensation deficits [(2,3,4,5)].
  • Patients may exhibit signs such as numbness, weakness, and decreased reflexes on the affected side 3, as well as decreased pain sensation on the opposite side [(2,3,4,5)].

Diagnosis and Treatment

  • Diagnosis of Brown-Séquard syndrome is often made through a combination of clinical examination, imaging studies such as MRI [(3,5)], and laboratory tests [(3,4)].
  • Treatment typically involves high-dose methylprednisolone [(2,3,4)], as well as surgical intervention in cases of spinal epidural hematoma 2 or other compressive lesions.
  • Nursing considerations and rehabilitation play a crucial role in enhancing recovery outcomes 6.

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.

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