You can see how badly a blocked nose can affect a young baby from your excellent description here. There are certainly two possible causes for his blocked nose, one is an adenoid enlargement and infection and the other is a nasal allergy. Of the two an adenoidal infection is much more likely especially with his infected nasal mucous and the fact that you have noticed that the obstuction to his nose appears to be high up in his nose.Use Salex nose drops at least twice a day to clear your baby's nose. If he continues to have a problem with a blocked nose he should be seen by an ENT specialist.
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