My 6 year old daughter suffers from allergies, i.e dogs, cats and dust mites and is undergoing immunotherapy, and takes Flovent Discus, Nasonex, Zyrtec as well.  Yesterday she started feeling "heavy" on her head and once she mentioned being a bit dizzy, today the dizziness is gone but she still feels "heavy".  Could this be part of the allergies causing these symptoms?
Hi, Heaviness and dizziness might be due to allergy and may be side effect of antihistamine she takes. Give antihistamine at night with full stomach. Ok and take care.