The presence of dark, tarry stools due to bleeding in the upper gastrointestinal tract.

The act of swallowing, which can be difficult due to various medical conditions.

A medical procedure that uses shock waves to break down kidney stones into smaller pieces.

Pain that arises from internal organs, often described as deep and difficult to localize.

A type of pain that is well localized and often sharp, usually arising from the skin, muscles, or joints.

A medical condition characterized by the expulsion of blood from the mouth, often resulting from gastrointestinal bleeding.

The passage of fresh blood through the anus, typically associated with lower gastrointestinal bleeding.

A complex community of microorganisms residing in the gastrointestinal tract that plays a crucial role in digestion and health.

A condition characterized by difficulty in swallowing, which can result from various disorders affecting the esophagus or throat.

A term for pain that is felt in a different location than its source, often seen in conditions affecting internal organs.