Reversible airway disease is a general term used to refer to many different specific diseases that all have some similar characteristics.
Asthma, some types of COPD, and some environmental allergies can all be classified as reversible airway disease.
The key characteristic of reversible airway disease is that symptom severity can wax and wane depending on external factors (weather, level of activity, allergens in the air). Reversible airway disease can be important in cases of high blood pressure because:
- People with high blood pressure and reversible airway disease tend to have higher risk of heart attack and other cardiovascular problems
- Reversible airway disease is a factor when considering which high blood pressure treatment to select

