noun
early-onset dementia; presenile dementia
Medical term for dementia occurring before old age, typically under 65. Also referred to as 若年認知症.
See also: 若年認知症
若年性認知症は65歳未満で発症する認知症の総称です。
Early-onset dementia is a general term for dementia that develops before the age of 65.
若年性認知症の患者数は増加傾向にある。
The number of patients with early-onset dementia is on the rise.