Hello I have a 7 year history of myoclonus but don't know what causes it.  Monday I went to another neurologist.  He asked me to breathe rapidly for a minute.  I'm not sure if I made it to a minute.  I slumped over to the right and started to shake violently.  Afterwards he said since the tests I had last year came out negative (MRI and EEG) he said he didn't see a need for anymore tests.  He said maybe I should see someone for stress management because stress manifest itself in different ways.  I left confused because I am a happy, blessed, laid back person.  Is he right?  What happened to me is that called a seizure?  Should I continue trying to find out what makes me lose my balance?

Summarized question: What are the causes for constant history of Myoclonus ?