Unusual Findings

These guides offer context for what you see—and when it is time to seek medical care. We always include red-flag reminders.

Start here

If you’re deciding between “food dye” and “urgent,” use this guide first.

Red or black stool: food dye or urgent?

If you’re seeing blood and want the most common causes + stop rules:

Blood in poop: common causes and when it’s urgent

If you’re seeing mucus or recognizable food:

Mucus in poop: common causes and when to worry
Undigested food in poop: common causes and when to worry

Guides coming soon

• Worms in stool

Guides