<human>:  Why is it called gangrene?
<bot>: It’s named after the French physician Jean-Martin Charcot, who first described it. He noticed that gangrene was a disease that was common among soldiers during the Napoleonic Wars. He observed that the soldiers had lesions on their limbs that were caused by bacteria. He also noticed that the patients died in terrible pain, and that they would often be buried alive by their friends and family.