People with dormant schizophrenic tendencies can sometimes experience repetition like this (thoughts, or physical actions) intermittently. It happens
and then again, and at one point the thought comes up "why am I doing this? what if I cant stop". At this point an irrational fear pops up and the
mind has now tricked itself into thinking its not in control of the action/thought. It continues and continues and each second it goes on it gets
worse because the fear just builds up.
Humans are creatures of habit, sometimes this can backfire. The solution is to not fear, breathe, and assume control over your mind again. I suggest
regular meditation if you think this may happen again.



) but I was told there and then that
nothing was at all out of place in my head. I told them about the singing and the uncontrollable laughing fits I've experienced recently (which I
haven't mentioned yet) and after they made sure they had my phone number so that they can contact me to give me information about other things I
could do about finding out the cause of these problems. I'm still in disbelief at how quick it was- I was expecting to have to make an appointment or
something. But is it usually that quick? 