Dark Stools can arise from 2 documented medical conditions. Understanding the clinical context helps identify urgent causes early.
Gallstones
Gallstones are hardened deposits of digestive fluid that form in the gallbladder. They can range from sand-grain size to golf-ball size. Many are asymptomatic, but when they block a duct they cause severe 'biliary colic' pain in the upper right abdomen.
Hepatitis A
Hepatitis A is a highly contagious liver infection caused by the hepatitis A virus, transmitted through contaminated food and water. Unlike hepatitis B and C, it does not cause chronic disease.
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