title: Letter: nasal congestion as a side effect of cromolyn sodium in a pediatric patient.
mesh_terms: D000293:Adolescent; D001249:Asthma / Q000188:drug therapy*; D004205:Cromolyn Sodium / Q000008:administration & dosage / Q000009:adverse effects* / Q000627:therapeutic use; D006801:Humans; D006940:Hyperemia / Q000139:chemically induced; D008297:Male; D009297:Nasal Mucosa / Q000187:drug effects*; D011241:Prednisone / Q000627:therapeutic use; D012220:Rhinitis / Q000139:chemically induced*
chemical_list: D004205:Cromolyn Sodium; D011241:Prednisone