Zachary Spiritos MD MPH on Instagram: "Overflow Diarrhea: The Sneaky Constipation Think you have diarrhea? It might actually be severe constipation in disguise. Overflow diarrhea happens when backed-up stool blocks the way, causing intermittent bathroom struggles followed by sudden, loose stools. People often feel bloated, full, and never fully empty—and sometimes pass rock-hard stools in between. The fix? A full clean-out (yep, we gotta flush the system) followed by an aggressive laxative regim