Segmental Zoster Paresis: A Literature Review

Area of Science:

• Neurology
• Infectious Diseases
• Dermatology

Background:

• Herpes zoster, caused by varicella-zoster virus reactivation, typically causes severe pain due to sensory nerve involvement.
• Segmental zoster paresis is a rare complication affecting motor nerves, leading to localized muscle weakness.
• Its low incidence and non-specific symptoms lead to underdiagnosis and misdiagnosis by clinicians.

Purpose of the Study:

• To review existing literature on segmental zoster paresis.
• To analyze its pathogenesis, diagnosis, and treatment.
• To highlight challenges in current management and inform future clinical practice.

Main Methods:

• A narrative review of studies was conducted.
• Searches were performed in PubMed and Chinese CNKI databases.
• Relevant clinical trials, reviews, and case reports were collected and analyzed.

Main Results:

• Segmental zoster paresis is an underrecognized complication with no established treatment guidelines.
• Electromyography and MRI can aid diagnosis; early antiviral therapy may prevent complications.
• While the exact mechanism remains unclear, 67% of patients achieve good functional recovery.

Conclusions:

• Early diagnosis of segmental zoster paresis is vital to prevent misdiagnosis and inappropriate treatment.
• Further clinical trials are necessary to elucidate mechanisms and establish optimal treatment strategies.
• Guidelines for functional rehabilitation are needed for patients with persistent symptoms.