Date: June 2000
Note: Covered under Alzheimer's disease until July 1999, then Degenerative organic-brain disease until July 2001 when separate definition came into force.
No separate definition, see Degenerative organic brain disease: Definite diagnosis by a Consultant Neurologist of a degenerative organic brain disease including (Alzheimer's disease, pre-senile dementia and Creutzfeldt-Jakob disease) evidenced by progressive loss of ability to remember, reason, perceive, understand, express and give effect to ideas beyond that associated with the normal effects of ageing. Neurosis and psychological illnesses are specifically excluded. (No requirement of "UK registered" consultant neurologist).