According to his family, he has had difficulty with his gait for at least three or four years.  At first, they thought it was weakness and because of he was on the ground (for example, gardening) he was not able to get up by himself.  They did try stopping the statin that he was taking at that time, but because there was no improvement over two weeks, they resumed the statin.  As time progressed, he developed more and more difficulty.  He started to shuffle.  He started using a cane about two and a half years ago and has used a walker with wheels in the front since July of 2006.  At this point, he frequently if not always has trouble getting in or out of the seat.  He frequently tends to lean backwards or sideways when sitting.  He frequently if not always has trouble getting in or out a car, always shuffles or scuffs his feet, always has trouble turning or changing direction, always has trouble with uneven surfaces or curbs, and always has to hold on to someone or something when walking.  He has not fallen in the last month.  He did fall earlier, but there seemed to be fewer opportunities for him to fall.  His family has recently purchased a lightweight wheelchair to use if he is traveling long distances.  He has no stairs in his home, however, his family indicates that he would not be able to take stairs.  His handwriting has become smaller and shakier.