diarrhea

hey all i was needing some help,my 8.5 year old has diarrhea.What i needed to know is what can cause this? Because we recently moved him to a smaller tank, gave him new cage accessories, and a 12 hour car ride. Can any of these things cause this?

Thanks.

It could just be stress, but it could also be parasites. If it only happens once, I might light it go. If it happens again, I would have a fecal performed by a vet just to double check. The test is not that expensive, and the peace of mind would definitely be worth it to me.