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Melena is a form of blood in stool which refers to the dark black, tarry feces that are commonly associated with upper gastrointestinal bleeding. [1] The black color and characteristic strong odor are caused by hemoglobin in the blood being altered by digestive enzymes and intestinal bacteria .
Most travelers recover within three to four days with little or no treatment. [3] About 12% of people may have symptoms for a week. [3] Bacteria are responsible for more than half of cases, [3] typically via foodborne illness and waterborne diseases.
Blood in stool looks different depending on how early it enters the digestive tract—and thus how much digestive action it has been exposed to—and how much there is. The term can refer either to melena, with a black appearance, typically originating from upper gastrointestinal bleeding; or to hematochezia, with a red color, typically originating from lower gastrointestinal bleeding. [6]
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Died of apparent dysentery in June, after a months-long period of illness during which he predicted his own imminent death, in his 46th year. 1422: King Henry V of England died suddenly on 31 August 1422 at the Château de Vincennes, apparently from dysentery, [39] which he had contracted during the siege of Meaux. He was 35 years old and had ...
Digested blood from the upper gastrointestinal tract may appear black rather than red, resulting in "coffee ground" vomit or melena. [2] Other signs and symptoms include feeling tired, dizziness, and pale skin color. [18] A number of foods and medications can turn the stool either red or black in the absence of bleeding. [2]
Karlee's Home Team's bid of $207,800 was chosen by city leaders from Dover, Rochester and Somersworth, which combine to oversee the center at 30 Willand Drive in Somersworth.
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