• Mucus: A kind of slimy, protective secretion from the inner linings of the organs of the body.
• Exacerbation: An increase in the severity of disease.
• Pathological: Any deviation from a healthy or normal condition.
• Immune System: The system of organs and processes of the body that provide resistance to and protection from infection and toxins. Organs include thymus, bone marrow, and lymph nodes.
• Eczema: This is a type of allergic skin disease consisting of itching, redness and raised eruptions.
• Bronchodilator: Drugs which dilate the air passages or bronchial tubes.