Herpes zoster occurs most commonly in middle & late life and appears to be associated with complication in man more commonly than in woman. The role of primary infection and secondary reactivation in the genesis of HZ is not clear.

Herpes zoster paralysis may be complicated by neurological symptom & sign which are not generally well recognized. Motor paralysis in the limb is extremely rare in herpes zoster, to my knowledge, about 100 cases have been collected at present, and more over, none in Korea.

This complication appears within days or several months after HZ eruption and is usually associated with a good prognosis.

Recovery may take several months or even years and is not alwasy completeed. This case has left upper trunk Brachial plexopathy after left C5, C6 dermatome herpes zoster eruption. I briefly reviewed of herpes zoster paralysis & clinical findings.