Ugh!! Diarrhea is not normal. People anytime something is out of the ordinary there is cause for concern. Diarrhea is not normal. Night Crawlers do not cause a frog to have diarrhea, parasites and bacteria do. Protazoa infections also cause diarrhea. All these are bad and if a frog has very foul smelling diarrhea it is most likely a internal infection of some kind. No one should be saying that this is no cause for alarm.
On rare occations a digestive imbalance can cause diarrhea.
Does Camo Frog's cloaca appear swollen, puffy, or red?