title: Contralateral Horner's syndrome following stellate ganglion block.
mesh_terms: D000772:Anesthesia, Local; D006732:Horner Syndrome / Q000209:etiology*; D006801:Humans; D008875:Middle Aged; D009407:Nerve Block / Q000009:adverse effects*; D011343:Procaine; D012019:Reflex Sympathetic Dystrophy / Q000601:surgery; D013233:Stellate Ganglion
chemical_list: D011343:Procaine