"Trench mouth" is a term used to describe an inflammatory disorder that affects the gums, tongue, and throat. The condition is also known as acute necrotizing ulcerative gingivitis (ANUG), Vincent's angina, or Vincent's infection. Although it was prevalent in the trenches during World War I, the condition can be triggered by poor oral hygiene or chronic stress. Other synonyms for trench mouth include gingivostomatitis ulceronecrotica, necrotizing ulcerative gingivitis, and ulcerative gingivitis. The common symptoms of trench mouth include pain, bleeding, bad breath, and ulcers in the mouth. To prevent trench mouth, it is vital to take good care of the teeth and gums by brushing and flossing regularly and quitting smoking.