title: Hayfever treatment: dangers.
mesh_terms: D006801:Humans; D014663:Nasal Decongestants / Q000009:adverse effects*; D009300:Nasal Septum / Q000293:injuries*; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*
chemical_list: D014663:Nasal Decongestants