title: Interscalene block and reflex sympathetic dystrophy.
mesh_terms: D000368:Aged; D001917:Brachial Plexus; D006801:Humans; D008297:Male; D009407:Nerve Block / Q000009:adverse effects*; D009437:Neuralgia / Q000209:etiology; D012019:Reflex Sympathetic Dystrophy / Q000209:etiology*