what causes a retention cyst? I developed and have one on my brain. I have seizures and involuntary movement at times and they dont know what causes these episodes and I also didnt pass my tilt table test for I passed out . They had diagnosed me with cardiac syncope. I was wondering if thsi cyst would cause me to have loss of conciousness if it pressing on something in my head. Well I have had seizures for four years and I developed involuntary movement a few years ago. I have been through extensive tests to figure out the cause and effect. I have had cardiac syncope for nine and a half years in which I have had two strokes and three falls and surgery from a fall do to this condition if you could give me some answers that would be appreciated for I just had a MRI complete and just received the findings this week. I was just wondering if this the cause of having issues for when I have these episodes they put me in bed for days and I get really sick when these episodes occur. I get dizzy alot and I different sensations that occur and sometimes make me walk in place at times and I am wondering if this is the cause of the problem that I am these seizures for I didnt always have seizures and they are just getting worse in time and now I have them in the evening and I was wondering what I could do in my daily living that would help so I dont get so sick when these episodes occur. I would like to know some further answers to some questions in which I will be contact with my physican as well.