Please forgive me if some of this text is taken from website info. I have gathered, and is not in my own words:
Encopresis is characterized by uncontrollable bowel movements resulting in soiled underwear. Usually occurring in boys*, usually starting in grade school. BUT it begins at a much younger age because a child is busy playing and does not want to stop for a bowel movement so they hold it all day. This results in it hurting when they go -which leads to more holding and more pain and the cycle begins. It becomes a real problem when a child goes to school because they do not want to use a strange bathroom. The rectum stretches and loses its feeling so the child does not feel the urge to go. So when they move, laugh, jump, etc. they have a movement in thier pants. The children really do not know they are having a movement.
There are some sources that say more *girls are being diagnosed, also younger children. But many Dr.s don't agree with this so do some online searching so you have info. to show the Dr.
The way to treat it is by a daily dose of mineral oil- check with your Dr. as to the dosage.
Also a laxative, (very difficult to deal with- I found Senakot (sp?) was good for us, just hated giving a daily dose).
And last a routine instituting a bathroom schedule. This gives the child a set time every day that they can and have to use the bathroom. Make it very comfortable for the child, give them a book to read, a toy, a snack, make them stay there for 10 minutes, give them lots of privacy!
This treatment can take a long time, but it took a long time to get to where they are so be patient.
There can be relapses, if a child becomes very immersed in something again and starts to hold again. Be vigilant like brushing thier teeth. Don't lose hope, it does get better.