This leads to infection. In most children, as the head grows, the drainage problem gets better. If young children are having too many ear infections, they might need antibiotics or special ear tubes. Allergy can cause inflammation inside the nose that lasts for a long time. Because of the inflammation, the normal drainage pathways of the nose and sinuses swell and get plugged up.
Bacteria grow, causing an infection.
Medicine is necessary to treat the cause of the infection, which is the allergy. Coughing that goes along with mild virus infections may be a sign of asthma. Sometimes when we think children have pneumonia as a complication of a cold, they really have asthma. These children need asthma medicine in addition to other medicine for infection. In some cases, the answer is chance alone.