I have been having loss of memory, anger,depression, heart & chest pressure, shortness of breath,at times I can go with out sleep, or just 2-3 hours sleep, other times just can not hold my eyes open long enogh to get laid down. I was in a car accident a month ago and the MRI says "Scattered foci of increased T2 and FLAIR signal intensity in bilateral frontal lobe periventricular AND SUBCORTICAL WHITE MATTER probably related to small vessel ischemic change. " what does that mean.?