Stool can change during a diverticulitis flare, but there is no single stool appearance that proves diverticulitis. Some people develop constipation, while others have diarrhea, changes in bowel frequency, bloating or abdominal discomfort. Diverticulitis is diagnosed using symptoms, examination and sometimes imaging rather than stool appearance alone.
Possible Bowel Changes
- Constipation or difficulty passing stool
- Diarrhea or looser stools
- Changes in bowel frequency
- Bloating or abdominal discomfort
- Less commonly, blood in the stool
What Does Diverticulitis Usually Feel Like?
Diverticulitis commonly causes persistent abdominal pain, often in the lower abdomen, along with tenderness and sometimes fever, nausea or changes in bowel habits. Symptoms vary and can overlap with other digestive conditions.
When Is Blood in Stool Concerning?
Visible blood or black, tarry stool should not automatically be attributed to diverticulitis. Significant bleeding, dizziness, fainting, weakness or severe abdominal pain requires prompt medical assessment.
When to Seek Care
Seek medical care for severe or worsening abdominal pain, fever, repeated vomiting, inability to keep fluids down, significant bleeding or signs of dehydration.
Bottom Line
Stool appearance alone cannot diagnose diverticulitis. If you have persistent abdominal symptoms or major changes in bowel habits, a healthcare professional can determine the likely cause and appropriate treatment.
