Rare presentation of Lucie Frey syndrome after trigeminal herpes zoster

Lucie Frey Syndrome, or "gustatory sweating," is a rare autonomic neuropathy caused by aberrant parasympathetic reinnervation following nerve damage. While commonly associated with traumatic or surgical etiologies, infectious causes such as herpes zoster are exceptionally rare in pediatric cases. We report the case of a 3-year-old female who developed unilateral erythema and focal hyperhidrosis on the right hemiface.