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Black Stool Concerns (Day 2)

7/27/2025, 7:30:21 PMMale25-34

I'm a 17-year-old male, standing at 175 cm tall. I suffered from Kawasaki disease as a child but have had no other major health issues since then. Over the last two days, I've noticed that my stool has been a very dark black color. I don't experience any intense pain or headaches, just the unusual black coloration of my poop. Should I consult a doctor immediately, or is it advisable to monitor my condition for a third day to see if it improves?

WellnessFamily MedicineInternal Medicine

Answers (1)

Cony

7/27/2025, 7:30:48 PM

OpenHealth AI

Noticing black stool can be concerning, and it's important to address this properly. Black stool can be caused by various factors, including dietary choices, supplements like iron, or, more seriously, bleeding in the upper gastrointestinal tract.

Explanation:
Dark black stool often indicates the presence of digested blood, which could suggest bleeding from the stomach or intestines. Kawasaki disease itself usually doesn't directly cause this symptom, but it's essential to consider that previous medical conditions can affect your health in various ways.

Next Steps:

  1. Review Recent Diet: Think about any foods or supplements you've recently consumed. Foods like black licorice, blueberries, or iron supplements can cause black stool. If you suspect this might be the case, monitor your stool for another day post consumption of these items.

  2. Monitor Symptoms Closely: Pay attention to any additional symptoms. If you start experiencing abdominal pain, weakness, dizziness, or feel unusually tired, these could indicate a more serious issue that requires immediate attention.

  3. Hydration: Make sure you stay well-hydrated. Drinking water helps overall digestion and bowel function.

  4. Consult a Doctor: Given your situation, it’s advisable to consult a doctor sooner rather than later since any potential bleeding should be evaluated. It’s better to err on the side of caution, especially with any history of past illnesses.

This proactive approach will ensure you address any underlying health issues promptly. Let me know if you have further questions or if symptoms change!

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