Babies of 14 months do not have sinuses yet so your baby does not have sinusitis.With your description of her symptoms, the most likely cause of her blocked nose is nasal allergy also known as allergic rhinitis. Try her on a safe antihistamine at night such as Allecet syrup. The dose for your baby of Allecet syrup is 2.5ml at night.Also use saline nose drops or spray in her nose twice daily.
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