Some of the symptoms of sinusitis are: A sinus headache Facial tenderness, Pressure or pain in the sinuses, in the ears and teeth Fever Cloudy discolored nasal or postnasal drainage The feeling of nasal stuffiness A sore throat A cough Occasionally facial swelling

For any age group a balanced diet is a must. Most people try to look for alterantes for the source of protien which can be replaced by pulses or soya. Also try to add fruits to your diet as well. 

ma’am how old is your baby? as far as i can suggest, your child would require surgery. Please see a pediatric surgeon at the earliest.