My 5 yr old is pooping and peeing on herself

Why is she peeing and pooping on herself.

[Jessica L Thomason Sassi, Ph.D., BCBA-D]

It’s tough to say why it’s happening, but it seems safest to first rule out any potential medical issues.  If you haven’t already, you should consult with her pediatrician and explain your concerns so that they can evaluate whether possible infections, constipation, or other illnesses are present.
I presume that you are reporting this is a problem because she is toilet trained and has been continent for a long period.  If this is true, and you have ruled out medical causes, then you should start to look at the times and conditions under which this is happening?  Does it happen before or during activities that she doesn’t like (so she is essentially escaping those situations)?  Does it happen when you or other caregivers are distracted or unavailable (so that she gets attention)?   Once you have looked at some of the possible related factors, you might be able to better identify solutions to the problem.