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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. [2]
(Find out the 9 most common reasons why your poop is black.) ... certain drugs and supplements can cause the stool to appear pale or clay-like. ... bloating, diarrhea, fatigue, joint pain, and ...
stool up to 10% in industrialized countries ingesting water or food contaminated with feces Amoebiasis: Entamoeba histolytica: intestines (mainly colon, but can cause liver failure if not treated) stool (fresh diarrheic stools have amoeba, solid stool has cyst) areas with poor sanitation, high population density and tropical regions
IBS can be classified as diarrhea-predominant (IBS-D), constipation-predominant (IBS-C), with mixed/alternating stool pattern (IBS-M/IBS-A) or pain-predominant. [104] In some individuals, IBS may have an acute onset and develop after an infectious illness characterized by two or more of: fever, vomiting, diarrhea, or positive stool culture ...
The symptoms most commonly associated with chronic pancreatitis, regardless of the cause, can include weight loss, diarrhea, and cramping. Accordingly, most people who have chronic pancreatitis ...
Along with smelly stool, other symptoms include watery stool, diarrhea, abdominal cramps, and abnormal heartbeat, per the Wisconsin Department of Health Services. 8. You have cancer.
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]
Diarrhea can cause electrolyte imbalances, kidney impairment, dehydration, and defective immune system responses. When oral drugs are administered, the efficiency of the drug is to produce a therapeutic effect and the lack of this effect may be due to the medication travelling too quickly through the digestive system, limiting the time that it ...