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The presence of bright red blood in stool, known as hematochezia, typically indicates lower gastrointestinal bleeding. 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]
It could be challenging to pinpoint the precise location of the blood if there is a lot of blood in the stomach. [6] Tagged red blood cell scintigraphies are a precise way to locate the bleeding vessels and pinpoint the area where they are bleeding. It can be applied to chronic and recurrent rectal bleeding with no apparent cause.
Bloody diarrhea and abdominal pain may be more prominent features in severe disease. [12] The severity of abdominal pain with UC varies from mild discomfort to very painful bowel movements and abdominal cramping. [14] High frequency of bowel movements, weight loss, nausea, fatigue, and fever are also common during disease flares.
Cramping may also occur during or after sex, during bowel movements, or while urinating.” Longstanding, severe endometriosis can cause a condition called frozen pelvis, which may lead to chronic ...
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]
In some occasions, severe abdominal cramps, fever, shock, and delirium can all be symptoms. [2] [14] [15] [16] In extreme cases, people may pass more than one liter of fluid per hour. More often, individuals will complain of diarrhea with blood, accompanied by extreme abdominal pain, rectal pain and a low-grade fever.
Tenesmus is characterized by a sensation of needing to pass stool, accompanied by pain, cramping, and straining. Despite straining, little stool is passed. [3] Tenesmus is generally associated with inflammatory diseases of the bowel, which may be caused by either infectious or noninfectious conditions. Conditions associated with tenesmus include:
Bowel obstruction, also known as intestinal obstruction, is a mechanical or functional obstruction of the intestines which prevents the normal movement of the products of digestion. [ 2 ] [ 5 ] Either the small bowel or large bowel may be affected. [ 1 ]