title: Allergic lacrimal obstruction.
abstract: Five patients with ocular allergy and intermittent epiphora had a temporary obstruction at the level of the lacrimal sac or canaliculus. The obstruction probably resulted from mucosal edema induced by rubbing the pruritic periocular tissues, a maneuver commonly performed by such patients. Treatment was aimed at inhibiting the allergic response with cromolyn sodium eyedrops, and patients were instructed to refrain from rubbing the periocular tissues.
mesh_terms: D004396:Coloring Agents; D003231:Conjunctivitis / Q000150:complications*; D004205:Cromolyn Sodium / Q000627:therapeutic use; D006801:Humans; D007765:Lacrimal Apparatus / Q000000981:diagnostic imaging; D007767:Lacrimal Duct Obstruction / Q000188:drug therapy / Q000209:etiology*; D011877:Radionuclide Imaging
chemical_list: D004396:Coloring Agents; D004205:Cromolyn Sodium