<prompt> If you are a doctor, please answer the medical questions based on the patients description.My mum is 76 and has been diagnosed with psp. Her trodat scan was normal but she has been put on syndopa plus levodopa Will this do her any good. What is the best diagnosis for psp. Clinically she has poor balance and unable to walk, has fallen a couple of times and has dry eyes. Is this good enough to conclude that it is psp  <response>: PSP is a progressive neurodegenerative disease. Features to suggest PSP are-loss of balance while walking, unexplained falls, stiffness in gait. Problems controlling eye movement. Slowness of eye movements, usually offer the first definitive clue - trouble voluntarily shifting their gaze vertically i.e., downward andor upward, prolonged or infrequent blinking, or difficulty in opening the eyes. In advanced stage, Typical StaringAnxious look can be present 