The first time I heard of this disorder, I was confused.  The doctor kept saying, "You know, dis-embarkment, like getting off of a boat!".  Ok, now it made sense.  Some people feel like they are on a boat when they are sitting, standing and/or walking.  I examined a man with disembarkment syndrome the first time about 20 years ago, but I didn't know what to call his condition.  I recently saw a different man with this syndrome.  He said he was looking at his device while on an airplane for about 45 minutes.  When he turned it off, he felt terribly sick and nauseated.  When he got off the plane, he said he felt like he was walking on 6 foot waves.  He said it had been this way for years!  In the examination, I found a severe one sided cerebellar deficit, which we started to change right away.  Unfortunately, this man did not continue with the treatment plan.  However, he was about 50% improved after approximately 2 months of treatment.  I also gave him homework so the neurological changes we made would continue to be stable.