Horner's syndrome; complication of lumbar sympathetic block.
D000758:Anesthesia; D000765:Anesthesia, Conduction / Q000150:complications*; D000776:Anesthesiology; D001340:Autonomic Nerve Block; D006732:Horner Syndrome / Q000209:etiology*; D006801:Humans; D012019:Reflex Sympathetic Dystrophy
ANESTHESIA, REGIONAL/complications; HORNER SYNDROME/etiology and pathogenesis