Unknown Episodes?

We have a 14 year old daughter that has what we only know as episodes. She has seen neurologists & had EEGs and Video EEGs and nothing shows on those. These episodes are being said to be psychological,but we feel otherwise because they affect to many things physically with her. The episodes can last 1-5 minutes with after effects lasting from short to long periods of time. The episodes are as follows: she loses bodily control(walking,moving,talking,pain,etc.) She will not talk or baby talk and actions during and after. Pain is associated with this.Sometimes messes herself. No talking during and after(like she can't) and mimics seizure type activity. These are just some of the bigger signs of the episodes. What could this be? Has been going on since 2010 with no straight diagnosis.