Corticobasal syndrome (CBS) is characterized by asymmetric involuntary movements including rigidity, tremor, dystonia, and myoclonus, and often associated with apraxia, cortical sensory deficits, and alien limb phenomena. Simply stated, Corticobasal syndrome (CBS) is a condition that causes changes in movement, language skills or both. Movement deficits in CBS often begin on one side of the body, but eventually both sides are affected. Like all FTD disorders, CBS is associated with degeneration of the brains frontal and temporal lobes. In addition, several regions deeper in the brain that play important roles in initiating, controlling and coordinating movement are also affected.