Gangrene is the term used to describe the decay or death of an organ or tissue caused by a lack of blood supply. It is a complication resulting from infectious or inflammatory processes, injury, or degenerative changes associated with chronic diseases, such as diabetes mellitus.
Heartburn :: Diagnosis of heartburn
Physicians typically diagnose gastroesophageal reflux disease (GERD) based on symptoms alone. When the clinical presentation is unclear, other tests can be performed to confirm the diagnosis or exclude other disorders.