For most individuals with Kufor–Rakeb syndrome, symptoms begin to appear within the first 10 to 20 years of age. Kufor–Rakeb syndrome is a neurodegenerative disorder, so the severity of symptoms tend to progress with time.[6] Symptoms of Kufor–Rakeb syndrome can be divided into two main categories: Motor symptoms (symptoms that affect movement) and non-motor symptoms (symptoms that do not affect movement).[citation needed]