Okay, so I am a 20 year old male and I have involuntary convulsions (like partial seizing) in my fingers, hands, arms and less commonly my pectorals, neck, and abdomen. The seizing can be isolated to a single muscle, or a group of muscles near each other, or a parallel muscle on my opposite side. If not parallel, then odds are about 75% the seizing is on my right side.
Sometimes I may notice the instant I'm about to seize, but cannot stop it. Being in public stops me from seizing as long as its being shown (e.g. hand under a table still seizes). The time a seizing of a muscle lasts varies, but no more than 30 seconds - and me focusing on stopping it helps (but isn't immediate). Episodes of seizing include these individual intermittent movements and can last from momentarily to upward of 2 hours relative to my mood and thought process. My mood and thought process also alter the frequency of seizing during an episode and are the major trigger of an episode. Episodes have been noticed to be triggered by anxiety, self-consciousness, and stimulus related to psychological disorders.
As of recently during some episodes I had repeated a single phrase 4 to 20 times, with no purpose but to say it. Also, in at least one case recently I had made a "tch" like sound, but more like just the "t" with air afterword - making this sound now while writing this feels like it might be the convulsion and release of a neck muscle.
About 1.5 years ago I developed panic attacks (I believe due to stress and emotional distress) that lasted for 2 months. They included these seizing symptoms, but also included paranoia, dread, frequent stomach convulsions, and maybe other symptoms I can't remember. However the symptoms I described above have remained with me since then.
I have no doubt that the cause is psychological since episodes are set off from mental stimulus and may either be prolonged or cut short, intensified or mellowed by my mental state and conscious thoughts.
Some possible symptoms that I haven't associated with the problem may be: enlarged lymph node on right side of neck (doctor has attributed to mononucleosis), indifference toward life. The problem may or may not occur more frequently when I'm lacking in social interaction for an extended period of time and may or may not also be suppressed by taking a daily vitamin. I haven't noticed any excessive psychological symptoms worth noting.
If you have any suggestions as to what my problem might be, please respond with what and why. Also if you have any questions related to symptoms that I may have but haven't noticed (and thus not mentioned) then feel free to ask.