...An MRI in two days time (Sat 5th) may help find the cause - it is possible that I've had a bleed.
My research has also highlighted the fact that this may be due to diabetes and high blood pressure/stress so, if anyone has any info, it would be great to hear from you.
Thanks again.
I've had Type II for some years and been on insulin since December 2009.
My sugars are generally high so this is a wake up call I think.
Thanks again for your interest and support.