Final answer:
Conditions like ulcerative colitis, Crohn's disease, and Shigella infections are associated with red "currant-jelly" stools, indicating possible intestinal bleeding.
Step-by-step explanation:
The condition associated with red "currant-jelly" stools is typically indicative of intestinal bleeding or lower GI tract disorders. Such bleeding can be a symptom of various conditions including ulcerative colitis, Crohn's disease, and bacterial infections like those caused by Shigella. Red "currant-jelly" stools can arise due to the mixture of blood with intestinal mucus. Ulcerative colitis, for instance, leads to inflammation and ulcers in the colon and rectum, causing bloody diarrhea and abdominal pain. Similarly, Crohn's disease, though not confined to the gastrointestinal tract, can present with GI tract symptoms such as a rash and bloody stools. Infections by Shigella may cause severe intestinal distress, leading to ulceration and bleeding. These stools can be a serious indicator and should prompt medical investigation to determine the exact cause and appropriate treatment.