Around 30 million U.S. adults are diagnosed with a sinus infection annually, with most cold sufferers experiencing some viral form of the condition.

Nearly 25 million people in the United States have asthma, with the majority of cases being diagnosed in children.

Mast cells release chemical mediators to coordinate protection against infection or promote wound healing. Some of the mediators can cause allergy symptoms.

Hay fever develops as the body’s immune system overreacts to elements in one’s environment and affects a person’s respiratory system.