The thing that seems to describe his experience most closely is dissociative fugue. It is purposeful travel, he feels he must get to a certain destination. But he does have some memory of the time before whatever this is wears off. The information I have found says that with a fugue state a person cannot remember what happened during the event. We are very concerned, and so glad he will have insurance coverage after the first. Apparently, you can only qualify for mental health care through medicaid, etc. if you already have a diagnosed mental illness--they couldn't say what a person is supposed to do to get diagnosed. But the change in my husband's insurance will allow all of the children to be on our policy now until age 26--so at 21 my son has several years for us to work on it!