Treatment is with a nose spray (eg Beconase or Flixonase) containing a very dilute dose of steroid (which is too small to be absorbed into your body and so does not cause steroid side effects).
Your doc may recommend: corticosteroid nasal spray – such as Flixonase, Beconase or Nasonex antihistamine nasal spray – also known as Rhinolast antihistamine eye drops – such as Otrivine or Optilast.