title: Patient information. Hay Fever.
mesh_terms: D000485:Allergens / Q000009:adverse effects*; D006633:Histamine Antagonists / Q000627:therapeutic use*; D006801:Humans; D006920:Hygiene; D014663:Nasal Decongestants / Q000627:therapeutic use*; D006255:Rhinitis, Allergic, Seasonal / Q000175:diagnosis / Q000209:etiology / Q000517:prevention & control
chemical_list: D000485:Allergens; D006633:Histamine Antagonists; D014663:Nasal Decongestants