Been there, and done that. Never had any regression issues after. I see nothing wrong with it. Just make sure to still encourage him to go in the potty. Diarrhea can be very acidic so if you can get him to the potty and avoid it touching his skin that would be best. But really, I've never had any issues. WE have 5 kids, and last time my almost 4 yr old had a bug we put her in diapers till it was over and we had no issues at all.
at 1:28 AM on May. 3, 2011