A spirometry test is one way to distinguish the type of lung disease. Emphysema and chronic bronchitis are both long-term lung conditions. They’re part of a disorder known as chronic obstructive ...

The National Institute of Mental Health defines chronic disease as “a condition that lasts at least one year and requires ongoing medical attention or limits activities of daily living or both.” ...

A study suggests that catching COVID-19 significantly raises the risk of developing ME/CFS (formerly called "chronic fatigue syndrome"), a typically lifelong condition that can be debilitating.