Overview
Middle brachial plexus neuropathy involves inflammation or damage to nerves in the middle portion of the brachial plexus, often triggered by infectious agents such as cytomegalovirus or varicella zoster virus (chicken pox). It can lead to significant shoulder and arm symptoms requiring prompt diagnosis and management to prevent complications like adhesive capsulitis 12.Diagnosis
Clinical History and Symptoms: Presence of acute onset shoulder and arm pain, weakness, and sensory changes 12.
Physical Examination: Neurological deficits localized to the middle brachial plexus distribution 12.
Electromyography (EMG): Useful for confirming neuropathic changes and assessing severity 1.
Laboratory Tests: Serological tests for suspected infectious causes (e.g., CMV, VZV) 12.
Imaging: MRI or ultrasound may rule out vascular or structural causes 3.
Differential Diagnosis: Exclude other causes like trauma, tumors, and vascular issues 3.Management
Antiviral Therapy: For infections like CMV or VZV, antiviral agents such as ganciclovir or acyclovir may be indicated 12.
Symptomatic Treatment: Pain management with NSAIDs or opioids as needed 1.
Physical Therapy: Early mobilization and physiotherapy to prevent adhesive capsulitis 1.
Corticosteroids: May be considered for severe inflammation, though evidence is limited 1.
Supportive Care: Rest, splinting, and ergonomic adjustments to reduce strain 1.
Monitoring: Regular follow-up to assess recovery and prevent complications 1.Special Populations
Athletes: Specific considerations for return to sport post-recovery, especially in high-demand activities like gymnastics 2.
No Specific Guidance: Limited data on pregnancy, pediatrics, elderly, or comorbidities from provided abstracts [].Key Recommendations
Early Diagnosis and Treatment: Initiate prompt diagnostic workup and appropriate treatment to prevent complications such as adhesive capsulitis (Evidence: Moderate) 1.
Consider Infectious Etiologies: Evaluate for infectious triggers like CMV or VZV, especially in cases with acute onset and systemic symptoms (Evidence: Moderate) 12.
Implement Physical Therapy Early: Engage in early physiotherapy to maintain mobility and prevent shoulder stiffness (Evidence: Expert opinion) 1.References
1 Vanpee D, Laloux P, Gillet JB, Esselinckx W. Viral brachial neuritis in emergency medicine. The Journal of emergency medicine 2000. link00189-4)
2 Kennedy M, Molloy M. Brachial plexus neuropathy in a gymnast associated with chicken pox. British journal of sports medicine 1989. link
3 Hindfelt B. Brachial neuropathy--a vascular cause? Two case reports. Archiv fur Psychiatrie und Nervenkrankheiten 1982. link