Feelings of blankness inside head, short term memory, or memory fluctuations, pains from brain injury four years ago, MRI, myelin, some times tired, off balance when tired, dizzy, neck pain off and on, chronic pain not as bad as even year ago. Usually symptoms when tired or salt or heat or worry, had a tbi, from closed concussion ,years ago! Hard to describe, sometimes bad headaches or pains where injury before.sensitive to sound light sometimes. MRI said mini stroke four years ago.