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I understand your concern for your child. As you told me, this is happening for long. And there is no fever, it seems to be some allergic condition. Are you still bottle feeding the kid? Is there any difficulty in breathing? Any sounds or snoring while breathing or sleeping? Give syrup Maxtra (Chlorpheniramine) one teaspoon thrice a day for five days. Nasal drop Xylomist P (Xylometazoline) one drop in both nostrils twice a day for three days.