title: Diurnal variation in the symptoms of hay fever: implications for pharmaceutical development.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002940:Circadian Rhythm; D003371:Cough; D003692:Delayed-Action Preparations; D004339:Drug Compounding; D005260:Female; D006634:Histamine H1 Antagonists / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009297:Nasal Mucosa / Q000276:immunology; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy* / Q000453:epidemiology; D012494:Sampling Studies; D012912:Sneezing; D012923:Social Class; D006113:United Kingdom
chemical_list: D003692:Delayed-Action Preparations; D006634:Histamine H1 Antagonists