Corticobasal Degeneration Home>Conditions_and_Diseases>Neurological_Disorders>Brain_Diseases>Corticobasal Degeneration     Web Pages Caregivers Guide Guide for Corticalbasal Ganglionic Degeneration. Corticobasal Degeneration Information sheet compiled by the National Institute of Neurological Disorders and Stroke. Corticobasal Ganglionic Degeneration (CBGD) Article by Timothy C. Hain, MD from Northwestern University Medical School.