Progressive Supranuclear Palsy

Progressive Supranuclear Palsy (PSP) is a rare progressive neurodegenerative disease that causes vision difficulties and loss of balance while walking. It is due to an abnormal accumulation of a protein in the nerve cells, called tau, which causes parts of the brain to deteriorate over time. As a result, people with PSP may experience increased difficulty with their thinking, speech, swallowing and movement.