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A perineural cyst is a cyst filled with CSF that occurs between the perineurium and endoneurium. As perineural cyst expands, it can exert pressure on the surrounding nerve fibers, potentially leading to neurological symptoms. Cervical perineural cysts are rare condition with a low prevalence, and there is a lack of systematic research on the disorder. Most individuals with these cysts are asymptomatic. In symptomatic case, there is no established treatment protocol. However, there have been reported cases of symptom improvement through nerve block procedures. In this case, patient presented with brachial plexopathy due to multiple perineural cysts, and was successfully treated by nerve root block and epidural block.