HI Well come to HCM Appreciate that Such running nose in this age group is very common phenomenon and this is most probably due to allergic condition and may not need any treatment Advise : Take care for hydration, and fever, secondary infection is the only matter of concern, else this is nothing to worry Treatment Encourage the child for drinking water air passage need must be clear, watch for breathing difficulty if found something like this then bronchodilator can be administered Medication: If condition does not improved till week then this can be managed with Levocetirizine syrup else, pure honey would be much better than medicines Hope this helps, take care.