Hemolytic uremic syndrome (HUS) is a thrombotic microangiopathy characterized by hemolytic anemia, acute kidney injury, and thrombocytopenia.
[…] abdominal pain, abdominal tenderness, nonpainful defecation Appendicitis Absence of anemia or thrombocytopenia, pain in right lower quadrant Colitis Afebrile, elevated white
Initial symptoms range from mild and gradual to acute and severe. Without treatment, disease progresses and is often fatal. Anemia typically causes weakness and fatigue.