Researchers have found that Young children experience an average of six to eight colds per year. Out of every 10 children with a cold, one develops sinusitis. Sinusitis occurs when the sinuses, which do not drain properly during a cold, become secondarily infected with bacteria. Instead of getting better, children with sinusitis often have worsening or persistent cold symptoms. In order to alleviate the symptoms of sinusitis, parents and physicians often resort to using decongestants, antihistamines and nasal irrigation. These treatments are available without requiring a prescription and are widely used.