...and other stuff!

Hello to everyone, I'm archduke_cat from England hoping for some assistance, I have'nt been able to find any information on this "thing" and was wondering if anybody here has any ideas. All help appreciated greatly.

Moving my fingers in a "fine" way causes an increasing head pressure and nausea. If I continue it gets very bad indeed. By fine movement I mean things like changing a battery in a watch or even sorting through a stack of old bills.

Later on I will often have diarhea and trouble staying awake and a tendancy to babble to myself.

Standing/sitting/lifting have a similar effect but not as quick or severe.

It's not related to concentration since acts that require concentration (but little movement) I am fine with. It's movement related or perhaps more accurately "control of muscle"

Has anybody here heard of anything like this?